Mobil1
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From: Poolville
So back to the topic, What I'm trying to find out is whether or not all the 20w50 oils that say they give the best protection for our Harley's is legitimate or not... Ok?
So. I need to make a correction in my previous post about the Mobil1 0w40 FS oil.. I was trying to remember the facts but misqouted my own info and have found the document that I was trying to remember to support my statement. In the following link you will find you will find research of the testing of many different oils. If you choose to read the document you will then "hopefully" be able to decide for "Yourself" and "Not for others" what you think works best for "YOU".... It's all in the following link... It's a very long read so prepare yourself.. However it does make a lot of sense to me..
https://540ratblog.wordpress.com/
Now, if you don't want to read the entire link I have condensed it a bit here to show the top ten best oil's as well as others that did not fair so well to point out the differences in Shear and scaring. The thing that gets interesting here is that the oils in the top ten are mostly 5w30 oils (synthetic). What I did find very interesting is that the Mobil 1 0w40 FS came in at #10 and Mobil1 15w50 came in at #46.. Surprisingly the first 20w50 oil to make the chart at #70 which was Valvoline Conventional VR1 racing oil..
So with this information I ask myself, Am I using the best possible oil for protecting my Harley? Who says we have to use a 20w50 conventional or synthetic when any one of the the top 10 oil's offer better protection, not just a little more but actually up to twice as much in the shearing scar wear..
So I ask you this, Is it wrong to use a highly rated 5w30 or even the Mobil 1 0w40 rated at #10 to protect our Harley's?
the following is my condensed version... And please no stupid remarks... I really am trying to figure this one out... Thanks...
I had to break it up into 2 post because of length allowed... Please go to the next post.. Thanks..
So. I need to make a correction in my previous post about the Mobil1 0w40 FS oil.. I was trying to remember the facts but misqouted my own info and have found the document that I was trying to remember to support my statement. In the following link you will find you will find research of the testing of many different oils. If you choose to read the document you will then "hopefully" be able to decide for "Yourself" and "Not for others" what you think works best for "YOU".... It's all in the following link... It's a very long read so prepare yourself.. However it does make a lot of sense to me..
https://540ratblog.wordpress.com/
Now, if you don't want to read the entire link I have condensed it a bit here to show the top ten best oil's as well as others that did not fair so well to point out the differences in Shear and scaring. The thing that gets interesting here is that the oils in the top ten are mostly 5w30 oils (synthetic). What I did find very interesting is that the Mobil 1 0w40 FS came in at #10 and Mobil1 15w50 came in at #46.. Surprisingly the first 20w50 oil to make the chart at #70 which was Valvoline Conventional VR1 racing oil..
So with this information I ask myself, Am I using the best possible oil for protecting my Harley? Who says we have to use a 20w50 conventional or synthetic when any one of the the top 10 oil's offer better protection, not just a little more but actually up to twice as much in the shearing scar wear..
So I ask you this, Is it wrong to use a highly rated 5w30 or even the Mobil 1 0w40 rated at #10 to protect our Harley's?
the following is my condensed version... And please no stupid remarks... I really am trying to figure this one out... Thanks...
I had to break it up into 2 post because of length allowed... Please go to the next post.. Thanks..
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Seasoned HDF Member
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From: Poolville
540 RAT – TECH FACTS, NOT MYTHS
Q AND A
June 20, 2013
MOTOR OIL ENGINEERING TEST DATA
The date June 20, 2013 just above, is the date this Blog was first started, NOT the date of the information included. It is regularly updated with the latest information, as indicated by the date several paragraphs below.
NOTE: The motor oil wear protection test data included in this Blog, is from Engineering performance testing of many different motor oils, which shows how they compare relative to each other. The focus is on the motor oils themselves. Therefore, the resulting comparison data applies to ANY engine that uses the oils included here, no matter if the engine is used for racing, daily driving, grocery getting, watercraft, or any other activity.
VISCOSITY vs WEAR PROTECTION CAPABILITY COMPARISON:
20 wt oils rank between number 2 and 220
30 wt oils rank between number 1 and 233
40 wt oils rank between number 6 and 219
50 wt oils rank between number 39 and 228
60 wt oil, the only one tested, ranked number 101
70 wt oil, the only one tested, ranked number 177
. So, as you can see, this is absolute PROOF that viscosity does NOT determine an oil’s wear protection capability, even though many people mistakenly believe it does. As mentioned above, an oil’s wear protection capability is determined by its base oil and its additive package “as a whole”, with the primary emphasis on the additive package, which contains the critical extreme pressure anti-wear components. And the additive package has nothing to do with viscosity.
NOTE: HTHS (High-Temperature/High-Shear) test data only provides information on how capable various motor oils are at maintaining their viscosity under high heat and high stress conditions. But, HTHS viscosity data DOES NOT provide any useful information at all about an oil’s wear protection capability. Because a motor oil’s viscosity DOES NOT determine its wear protection capability. See article 17 titled, “Do HTHS (High-Temperature/High-Shear) values provide any useful information about wear protection capability?”, for more details.
I generally recommend that people choose a highly ranked motor oil to begin with, since highly ranked oils don’t need any additional help. And to use that oil just as it comes, right out of the bottle, with NO aftermarket additives at all. However, there is also data included below from testing a several different aftermarket motor oil additives, for informational purposes only, just to show how these additives actually work compared to their claims. But, I do NOT endorse them nor recommend their use.
* FOR THE RECORD, I am NOT connected in any way to the Motor Oil or Aftermarket Additive Industry. I have absolutely no interest in what products people choose to use. So, I DO NOT promote any particular brand. I only share the results that come out of my Engineering tests, good or bad.
The Wear Protection reference categories are:
* Over 120,000 psi = FANTASTIC wear protection
* 105,000 to 120,000 psi = INCREDIBLE wear protection
* 90,000 to 105,000 psi = OUTSTANDING wear protection
* 75,000 to 90,000 psi = GOOD wear protection
* 60,000 to 75,000 psi = MODERATE wear protection
* 50,000 to 60,000 psi = UNDESIRABLE LOW wear protection
* Below 50,000 psi = CAUTION – EXTREMELY LOW wear protection
The HIGHER the psi value, the BETTER the Wear Protection.
Test result differences between oils of less than 10% are not significant, and oils within that range can be considered approximately equivalent.
Keep in mind that my Engineering motor oil torture testing is designed to reach each oil’s load carrying capability limit, which is then measured, documented, and used for comparison against other motor oils. So, in order reach the load carrying capability limit of each oil, my test procedure and equipment are designed to load oils much more heavily than actual running engines are designed to do. Therefore, an actual running engine may operate acceptably with a low performing oil from my Wear Protection Ranking List, as long that engine does not load its oil beyond the load carrying capability of the oil being used.
My Wear Protection Ranking List provides information that allows people to choose the level of wear protection capability they desire for their particular engine, which cannot be found anywhere else. Since you have to buy oil for your engine anyway, it is in your engine’s best interest, to buy a highly ranked, high performance motor oil. The better the oil’s performance, the safer your engine.
IT’S WORTH REPEATING THAT SOME KEY POINTS TO KEEP IN MIND ABOUT THIS TESTING ARE:
The psi reference values above, ONLY APPLY TO MY TEST DATA, not to actual engine component loading. Here’s why:
The motor oil “Dynamic Wear Testing Under Load” I perform is WORST CASE torture testing. My test equipment is NOT intended to duplicate an engine’s internal components. On the contrary, the test equipment is specifically designed to generate severe loading, that will quickly cause an oil to reach its failure point, in order to determine what its capability limit it is. The test loading is severe enough, that the wear scar size that forms, based on an oil’s load carrying capability (the wear scar is what is measured), has stabilized at its final size by the conclusion of a 30 second load test. Procedure development testing showed that more time than that did not change the wear scar size. Every oil I test is brought to its failure point, that’s how it works. The difference in the failure points, is what we compare. My testing subjects the oil to far more severe loading than even the most wicked flat tappet race engine could ever generate.
But, a running engine is designed to last indefinitely, and of course, they do not generally cause an oil to reach its failure point. So, due to the COMPLETE DIFFERENCE in design, the pressures in my test are completely different, and therefore CANNOT be compared directly to an engine’s lobe/lifter interface pressure. That would be comparing apples to oranges, which makes absolutely no sense at all. My testing is so severe, that the oil fails at a much earlier point than it would in an engine. And that is why my test data psi values appear lower than you might expect to see in some running engines.
In addition to that, my equipment’s calibration is checked and adjusted if required, each time the testing switches to a different oil. That keeps the final results accurate at all times. And keep in mind, I’m comparing OIL AGAINST OIL, and the procedure used is exactly the same for each oil tested. For better or worse, each oil stands on its own merit, and produces the best wear protection capability that its chemical composition allows. If oil A produces twice the psi value of oil B in my testing, then oil A will also provide twice the wear protection capability of oil B, in a running engine.
All the oils were tested at a representative operational temperature of 230*F. A colder test temperature of less than 212*F would have been too cold, and would have been below desirable normal operating temperature, as well as being too low to even quickly boil off natural condensation, which if not quickly eliminated can dilute the oil. A hotter test temperature of above 250*F, would have been hotter than desirable normal operating temperature, and would have been so high, that many motor oils would already have reached the threshold of thermal breakdown. Remember that critical internal engine components are directly “OIL COOLED”, and only indirectly water cooled. So, the oil needs to stay cool enough to actually help cool those components. Therefore, 230*F is an ideal test temperature to arrive at the most meaningful values for comparison. I’ve also tested oils at 275*F, as well as 325*F, and found that there was no significant change in the ranking order, which further confirms that the test temperature of 230*F is absolutely valid, even though operating temperatures vary in certain locations of an engine.
All the oils tested here were brand new oils. But, I’ve also “wear tested” a number of those oils, both synthetic and conventional, when they were used with 5,000 miles on them. And in every case, even though those oils had been subjected to heat and stress over a significant length of time, there was NO REDUCTION what so ever, in wear protection capability, even though the zinc levels had dropped by around 25% on average. So, this is even further proof that the zinc level is not tied to a motor oil’s wear protection capability, as well as absolute proof and validation that testing new oils is representative of what we can expect from those oils as they accumulate time and miles on them.
I’m a Mechanical Engineer. Mechanical Design Engineering is what I do for a living. And a Mechanical Engineer is clearly the most qualified Engineer to test motor oil that was formulated by Chemical Engineers, for wear protection capability between mechanical components under load.
And again, most important of all, is at the end of the day, my test data EXACTLY MATCHES real world race track experience, real world flat tappet break-in experience, and real world High Performance street experience, which PROVES once and for all, that my test data is the spot on REAL DEAL. This completely confirms that my test results WILL ACCURATELY PREDICT what we can expect from motor oils in running engines on the track, during flat tappet or roller break-in, or on the street, EVEN if those oils are high zinc oil. It also bears repeating, that all the data here was determined by the Physics and Chemistry involved. It is NOT my opinion, and it is NOT my theory. It is the Science that tells us what is going on with motor oils. And no one can argue with Physics and Chemistry. So, that should be more than enough proof to satisfy anyone who was skeptical of how well my test data compares to the real world.
Q AND A
June 20, 2013
MOTOR OIL ENGINEERING TEST DATA
The date June 20, 2013 just above, is the date this Blog was first started, NOT the date of the information included. It is regularly updated with the latest information, as indicated by the date several paragraphs below.
NOTE: The motor oil wear protection test data included in this Blog, is from Engineering performance testing of many different motor oils, which shows how they compare relative to each other. The focus is on the motor oils themselves. Therefore, the resulting comparison data applies to ANY engine that uses the oils included here, no matter if the engine is used for racing, daily driving, grocery getting, watercraft, or any other activity.
VISCOSITY vs WEAR PROTECTION CAPABILITY COMPARISON:
20 wt oils rank between number 2 and 220
30 wt oils rank between number 1 and 233
40 wt oils rank between number 6 and 219
50 wt oils rank between number 39 and 228
60 wt oil, the only one tested, ranked number 101
70 wt oil, the only one tested, ranked number 177
. So, as you can see, this is absolute PROOF that viscosity does NOT determine an oil’s wear protection capability, even though many people mistakenly believe it does. As mentioned above, an oil’s wear protection capability is determined by its base oil and its additive package “as a whole”, with the primary emphasis on the additive package, which contains the critical extreme pressure anti-wear components. And the additive package has nothing to do with viscosity.
NOTE: HTHS (High-Temperature/High-Shear) test data only provides information on how capable various motor oils are at maintaining their viscosity under high heat and high stress conditions. But, HTHS viscosity data DOES NOT provide any useful information at all about an oil’s wear protection capability. Because a motor oil’s viscosity DOES NOT determine its wear protection capability. See article 17 titled, “Do HTHS (High-Temperature/High-Shear) values provide any useful information about wear protection capability?”, for more details.
I generally recommend that people choose a highly ranked motor oil to begin with, since highly ranked oils don’t need any additional help. And to use that oil just as it comes, right out of the bottle, with NO aftermarket additives at all. However, there is also data included below from testing a several different aftermarket motor oil additives, for informational purposes only, just to show how these additives actually work compared to their claims. But, I do NOT endorse them nor recommend their use.
* FOR THE RECORD, I am NOT connected in any way to the Motor Oil or Aftermarket Additive Industry. I have absolutely no interest in what products people choose to use. So, I DO NOT promote any particular brand. I only share the results that come out of my Engineering tests, good or bad.
The Wear Protection reference categories are:
* Over 120,000 psi = FANTASTIC wear protection
* 105,000 to 120,000 psi = INCREDIBLE wear protection
* 90,000 to 105,000 psi = OUTSTANDING wear protection
* 75,000 to 90,000 psi = GOOD wear protection
* 60,000 to 75,000 psi = MODERATE wear protection
* 50,000 to 60,000 psi = UNDESIRABLE LOW wear protection
* Below 50,000 psi = CAUTION – EXTREMELY LOW wear protection
The HIGHER the psi value, the BETTER the Wear Protection.
Test result differences between oils of less than 10% are not significant, and oils within that range can be considered approximately equivalent.
Keep in mind that my Engineering motor oil torture testing is designed to reach each oil’s load carrying capability limit, which is then measured, documented, and used for comparison against other motor oils. So, in order reach the load carrying capability limit of each oil, my test procedure and equipment are designed to load oils much more heavily than actual running engines are designed to do. Therefore, an actual running engine may operate acceptably with a low performing oil from my Wear Protection Ranking List, as long that engine does not load its oil beyond the load carrying capability of the oil being used.
My Wear Protection Ranking List provides information that allows people to choose the level of wear protection capability they desire for their particular engine, which cannot be found anywhere else. Since you have to buy oil for your engine anyway, it is in your engine’s best interest, to buy a highly ranked, high performance motor oil. The better the oil’s performance, the safer your engine.
IT’S WORTH REPEATING THAT SOME KEY POINTS TO KEEP IN MIND ABOUT THIS TESTING ARE:
The psi reference values above, ONLY APPLY TO MY TEST DATA, not to actual engine component loading. Here’s why:
The motor oil “Dynamic Wear Testing Under Load” I perform is WORST CASE torture testing. My test equipment is NOT intended to duplicate an engine’s internal components. On the contrary, the test equipment is specifically designed to generate severe loading, that will quickly cause an oil to reach its failure point, in order to determine what its capability limit it is. The test loading is severe enough, that the wear scar size that forms, based on an oil’s load carrying capability (the wear scar is what is measured), has stabilized at its final size by the conclusion of a 30 second load test. Procedure development testing showed that more time than that did not change the wear scar size. Every oil I test is brought to its failure point, that’s how it works. The difference in the failure points, is what we compare. My testing subjects the oil to far more severe loading than even the most wicked flat tappet race engine could ever generate.
But, a running engine is designed to last indefinitely, and of course, they do not generally cause an oil to reach its failure point. So, due to the COMPLETE DIFFERENCE in design, the pressures in my test are completely different, and therefore CANNOT be compared directly to an engine’s lobe/lifter interface pressure. That would be comparing apples to oranges, which makes absolutely no sense at all. My testing is so severe, that the oil fails at a much earlier point than it would in an engine. And that is why my test data psi values appear lower than you might expect to see in some running engines.
In addition to that, my equipment’s calibration is checked and adjusted if required, each time the testing switches to a different oil. That keeps the final results accurate at all times. And keep in mind, I’m comparing OIL AGAINST OIL, and the procedure used is exactly the same for each oil tested. For better or worse, each oil stands on its own merit, and produces the best wear protection capability that its chemical composition allows. If oil A produces twice the psi value of oil B in my testing, then oil A will also provide twice the wear protection capability of oil B, in a running engine.
All the oils were tested at a representative operational temperature of 230*F. A colder test temperature of less than 212*F would have been too cold, and would have been below desirable normal operating temperature, as well as being too low to even quickly boil off natural condensation, which if not quickly eliminated can dilute the oil. A hotter test temperature of above 250*F, would have been hotter than desirable normal operating temperature, and would have been so high, that many motor oils would already have reached the threshold of thermal breakdown. Remember that critical internal engine components are directly “OIL COOLED”, and only indirectly water cooled. So, the oil needs to stay cool enough to actually help cool those components. Therefore, 230*F is an ideal test temperature to arrive at the most meaningful values for comparison. I’ve also tested oils at 275*F, as well as 325*F, and found that there was no significant change in the ranking order, which further confirms that the test temperature of 230*F is absolutely valid, even though operating temperatures vary in certain locations of an engine.
All the oils tested here were brand new oils. But, I’ve also “wear tested” a number of those oils, both synthetic and conventional, when they were used with 5,000 miles on them. And in every case, even though those oils had been subjected to heat and stress over a significant length of time, there was NO REDUCTION what so ever, in wear protection capability, even though the zinc levels had dropped by around 25% on average. So, this is even further proof that the zinc level is not tied to a motor oil’s wear protection capability, as well as absolute proof and validation that testing new oils is representative of what we can expect from those oils as they accumulate time and miles on them.
I’m a Mechanical Engineer. Mechanical Design Engineering is what I do for a living. And a Mechanical Engineer is clearly the most qualified Engineer to test motor oil that was formulated by Chemical Engineers, for wear protection capability between mechanical components under load.
And again, most important of all, is at the end of the day, my test data EXACTLY MATCHES real world race track experience, real world flat tappet break-in experience, and real world High Performance street experience, which PROVES once and for all, that my test data is the spot on REAL DEAL. This completely confirms that my test results WILL ACCURATELY PREDICT what we can expect from motor oils in running engines on the track, during flat tappet or roller break-in, or on the street, EVEN if those oils are high zinc oil. It also bears repeating, that all the data here was determined by the Physics and Chemistry involved. It is NOT my opinion, and it is NOT my theory. It is the Science that tells us what is going on with motor oils. And no one can argue with Physics and Chemistry. So, that should be more than enough proof to satisfy anyone who was skeptical of how well my test data compares to the real world.
Thread Starter
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Seasoned HDF Member
Joined: Mar 2010
Posts: 21,117
Likes: 7,643
From: Poolville
The “WEAR PROTECTION RANKING LIST” itself, begins here:
1. 5W30 Quaker State “Full Synthetic” (abbreviated QSFS), dexos 1 Gen 2, ILSAC GF-6A, API SP = 152,674 psi
And that psi value sets a WHOPPING NEW ALL-TIME RECORD for motor oils that I have put through my Engineering Torture Test on motor oil. It was tested in Spring 2021.
This new 5W30 Quaker State “Full Synthetic” motor oil replaces the previous 5W30 Quaker State “Ultimate Durability” (abbreviated QSUD) synthetic.
zinc = TBD
phos = TBD
moly = TBD
The psi value of this new oil, which came from testing it at the normal operating test temperature of 230*F, put it in the FANTASTIC Wear Protection Category. However, I went on to also test this oil at the much higher temperature of 275*F. At that elevated temperature, most hotter and thinner oils typically experience a drop in Wear Protection Capability. But, even at that elevated temperature, this oil produced an extremely impressive 148,133 psi, which was only a small 3% drop in capability. And that value still kept this much hotter and thinner oil in the FANTASTIC Wear Protection Category.
I also tested this oil to find out its onset of thermal breakdown, which was 290*F.
This new oil was purchased at Walmart. And its truly amazing performance is further proof that Walmart is selling legitimate motor oil, even though their prices are extremely low compared to typical Auto Parts Stores. Many of us who have been devoted users of the previous Quaker State “Ultimate Durability” motor oil, were concerned that Quaker State’s Corporate bean counters might get their hands on this new Quaker State “Full Synthetic” oil, and cut costs that would ruin the oil. Fortunately, as it turned out, that did not happen. And in fact, now this latest new 5W30 Quaker State “Full Synthetic” motor oil, is BY FAR, the BEST PERFORMING motor oil that I have ever tested. This is absolute proof that Quaker State REALLY knows how to formulate motor oil.
This new “Full Synthetic” motor oil has set the bar so high, that it is the oil I will be using in my own vehicles from stock to High Performance, from now on. And it is the motor oil that I will recommend to my Blog readers for most water cooled, gasoline powered engines, that can use 5W30. This is especially THE “go to” motor oil for traditional flat tappet engines to provide the utmost in protection against wiped cam lobes.
Never say never, but it is hard to imagine another motor oil ever producing numbers this amazing. Here is a back to back comparison of the new 5W30 Quaker State “Full Synthetic” and the old 5W30 Quaker State “Ultimate Durability”.
NOTE: The Higher the psi value, the Better the wear protection capability. And the Higher the onset of thermal breakdown value, the Higher the oil temperature can reach before the oil begins to deteriorate due to heat.
QSFS at 230*F = 152,674 psi
QSFS at 275*F = 148,133 psi
QSFS onset of thermal breakdown = 290*F
QSUD at 230*F = 133,125 psi
QSUD at 275*F = 115,764 psi
QSUD onset of thermal breakdown = 275*F.
The only possible concern about this amazing new 5W30 Quaker State “Full Synthetic” motor oil, is that it might be “too good” for use in wet clutch motorcycles. Because of the potential for possible clutch slipping. So, testing will be required to determine that.
2. Prolong Engine Treatment added to 5W30 Pennzoil Ultra, API SN synthetic = 136,658 psi
This oil on its own WITHOUT the Prolong Engine Treatment added to it, has a wear protection capability of 92,569 psi. With the recommended amount of Prolong added per qt, its wear protection capability “WENT UP 48%”.
WARNING!!! Prolong Engine Treatment contains chlorine. As a result, there have been legal issues with this product because of chlorine caused engine damage. And Prolong also settled with the FTC over unsubstantiated claims they made about their product’s capability. The psi data here provides information on wear protection capability ONLY! But, it does NOT provide any information on the long term effects of this product’s chlorine.
Chlorine’s long term corrosive damage, outweighs any short term friction reduction benefit. Chlorine is so corrosive that the motor oil industry stopped using chlorine compounds as part of factory additive packages, decades ago. In lab testing, Prolong showed to contain a startling high 30% chlorine. Using an aftermarket additive containing chlorine, is extremely risky, and is playing Russian Roulette with your engine. Prolong provides no benefit to stock engines, or other engines that are designed and built properly, that is worth risking serious long term engine damage.Aftermarket motor oil additives ruin an oil’s carefully balanced factory additive package, making the oil WORSE OVERALL than it was to begin with, no matter what it may or may not do for the wear protection capability. The test data on Prolong is included in my Ranking List for informational purposes only, because of requests I have received about testing this product. But, I do NOT endorse it, and would never recommend its use.
It is always best to simply choose a highly ranked motor oil from my Wear Protection Ranking List in the first place, which will NOT need any help. Then use it just as it comes, right out of the bottle with NO aftermarket additives, and your engine will be well protected.
3. 5W30 Tribodyn, synthetic = 135,434 psi
This oil has no API certifications, but the bottle claims that the oil meets the API SN specs. The bottle also says do NOT use this as break-in oil, and also that this oil is NOT recommended for wet clutch applications. It also cautions to shake the bottle well before use. NOTE: I always thoroughly shake every bottle of oil before performing my Engineering Torture Test on it. This oil is made in the U.S.A, and was tested summer 2020.
zinc = TBD
phos = TBD
moly = TBD
The psi value of this oil, which came from testing it at the normal operating test temperature of 230*F, put it in the FANTASTIC Wear Protection Category. However, I went on to also test this oil at the much higher temperature of 275*F. At that elevated temperature, most hotter and thinner oils typically experience a drop in Wear Protection Capability. However, this is one of those rare motor oils that produced an increase in its wear protection capability at higher temperature. It produced 143,801 psi at 275*F, which was up 6% from its 230*F value. And even at that elevated temperature, this much hotter and thinner oil was of course still in the FANTASTIC Wear Protection Category. I also tested this oil to find out its onset of thermal breakdown, which was 280*F.
At the time of this writing, I had tested 240 motor oils. And this oil produced the highest wear protection psi values I have ever seen from a motor oil just as it comes, right out of the bottle. Very impressive for an oil that few people have even heard of. However, it fell wildly short of the wear protection capability that this maker claimed it produced in a European University wear protection capability test. In that test, they claimed 5W30 Tribodyn street oil produced 54 times, yes 54 times as much psi as 0W40 Amsoil Signature Series oil. Of course a claim like that is totally absurd, and insults our intelligence. As you can see just below, Amsoil Signature Series oils were the highest ranked oils of all the oils I had tested, until I did this test on 5W30 Tribodyn synthetic oil. And the Tribodyn actually produced only slightly better psi numbers than Amsoil. Buyer beware of blatant false advertising.
4. 0W30 Ravenol VSW, USVO (Ultra Strong Viscosity Oil), synthetic = 135,395 psi
This low friction motor oil has an ACEA C3 certification, and is for passenger car gasoline or diesel engines with or without turbocharging or direct injection. This very impressive motor oil is made in Germany, and was tested in early 2021.
The psi value of this oil, which came from testing it at the normal operating test temperature of 230*F, put it in the FANTASTIC Wear Protection Category. And I also went on to test this oil at the much higher temperature of 275*F. At that elevated temperature, any hotter and thinner oil is expected to experience a drop in Wear Protection Capability. This oil had only a small 4% drop in capability. But, even at that elevated temperature, it produced an impressive 129,754 psi, which still kept this much hotter and thinner oil in the FANTASTIC Wear Protection Category.
I also tested this oil to find out its onset of thermal breakdown, which was a somewhat disappointing 265*F. NOTE: Motor oils do NOT stop working when they exceed the onset of thermal breakdown point. They just begin to slowly deteriorate.
.5. 0W20 Amsoil Signature Series, synthetic = 134,840 psi
The bottle does not have an API symbol, but it claims the oil can be used in applications that require API SN, GM dexos 1, ACEA A1/B1. It also claims to provide 75% better wear protection than required by the API SN specification. And it claims 50% more cleaning power than Amsoil OE motor oil.
zinc = TBD
phos = TBD
moly = TBD
This oil was tested Fall 2017. And it produced the highest psi value ever seen in my testing, from “ANY” motor oil just as it comes right out of the bottle, with no aftermarket additives. Very impressive. My test results confirm that Amsoil’s claim of this oil providing exceptional wear protection, is true. And this is further proof that you do NOT need heavy thick viscosity to provide such impressive wear protection.
As it stands in Fall 2017, Amsoil Signature Series synthetic motor oils, hold the top two positions in my Wear Protection Ranking List for oils just as they come, right out of the bottle, with no aftermarket additives. Motor oils have to be EXTREMELY GOOD to perform that well in my Engineering torture test on motor oil. Amsoil knows what they are doing, and they have set the bar to a new very high level.
.6. 5W30 Amsoil Signature Series, synthetic = 134,352 psi
The bottle does not have an API symbol, but it claims the oil can be used in applications that require API SN, GM dexos 1, ACEA A5/B5, A1/B1. It also claims to provide 75% better wear protection than required by the API SN specification (though it does say that claim is in reference to their 0W20 Amsoil Signature Series synthetic). And it claims 50% more cleaning power than Amsoil OE motor oil.
zinc = TBD
phos = TBD
moly = TBD
This oil was tested Fall 2017.
The psi value of this oil, which came from testing it at the normal operating test temperature of 230*F, put it in the FANTASTIC Wear Protection Category. And it produced the highest psi value ever seen in my testing, from any 5W30 motor oil just as it comes right out of the bottle, with no aftermarket additives. Very impressive. My test results confirm that Amsoil’s claim of this oil providing exceptional wear protection, is true. This oil could well be “THE MOTOR OIL OF CHOICE” for most High HP engines, including Bad Boy traditional American flat tappet pushrod engines, or for virtually any engine where 5W30 is used.
And I also went on to test this oil at the much higher temperature of 275*F. At that elevated temperature, any hotter and thinner oil is expected to experience a drop in Wear Protection Capability. This oil had only a modest 7% drop in capability. But, even at that elevated temperature, it produced an impressive 124,573 psi, which still kept this much hotter and thinner oil in the FANTASTIC Wear Protection Category.
In addition, I also tested this oil at 130*F, which is an oil temperature in the middle of the range of the Sequence IVA Wear Test (ASTM D6891) = 123,882 psi, which still had it in the FANTASTIC Wear Protection Category, even though this value is about an 8% drop from the normal 230*F test temperature’s psi value. NOTE: An engine warming up, will transition right past this temperature as it heats up to its normal operating temperature.
As it stands in Fall 2017, Amsoil Signature Series synthetic motor oils, hold the top two positions in my Wear Protection Ranking List for oils just as they come, right out of the bottle, with no aftermarket additives. Motor oils have to be EXTREMELY GOOD to perform that well in my Engineering torture test on motor oil. Amsoil knows what they are doing, and they have set the bar to a new very high level.
. 7. 5W30 Quaker State Ultimate Durability, dexos 1 – Gen 2, API SN “Plus”, synthetic (green bottle) = 133,125 psi
NOTE: THIS MOTOR OIL WAS DISCONTINUED, AND REPLACED BY QUAKER STATE “FULL SYNTHETIC” IN EARLY 2021. SEE ABOVE FOR THE NEW OIL’S RANKING POSITION.
This oil was tested again in late 2019 for two reasons:
1. It became available with the API SN “Plus” certification, so there was an interest in seeing if there were any changes in its performance.
2. This oil was purchased at Walmart. And that was significant because it was so shockingly cheap at Walmart, compared to mainstream Auto Parts Stores, that there were concerns that Walmart might be selling counterfeit oil. Here’s why:
This oil was purchased at Walmart in late 2019, where the price was about $6.00 per quart bottle, and about $20.00 per 5 quart jug. At the same time, a few miles away, this oil’s price at Pep Boys Auto Parts Store was about $9.00 per quart, and about $35.00 per 5 quart jug. So, there was a need to find out if this oil being sold so cheap at Walmart was legitimate or not. Sure, you could say that Walmart makes such large purchases that it gets a break on price. But then, you could say the same thing about Pep Boys Auto Parts chain stores. But, the proof was in the pudding as they say. And as you can see by the psi value and ranking position above, this is the best performing 5W30 Quaker State Ultimate Durability, that I’ve ever tested. So, Walmart gets a clean bill of health. They are selling legitimate QSUD, and there is nothing to be concerned about. Now, we would have a hard time justifying buying this oil anywhere besides Walmart.
zinc = TBD
phos = TBD
moly = TBD
The psi value of this oil, which came from testing it at the normal operating test temperature of 230*F, put it in the FANTASTIC Wear Protection Category.
However, I went on to also test this oil at the much higher temperature of 275*F. At that elevated temperature, any hotter and thinner oil is expected to experience a drop in Wear Protection Capability. And this oil did have a 13% drop in capability. However, even at that reduced value down to 115,764 psi, this much hotter and thinner oil was in the INCREDIBLE Wear Protection Category. I also tested this oil to find out its onset of thermal breakdown, which was 275*F8. 5W30 Renewable Lubricants, Super High Performance Passenger Vehicle, Bio-SynXtra, motor oil = 130,436 psi
This patented biobased motor oil uses agricultural vegetable oil base stock, and is biodegradable. It claims to provide optimum performance in newer High Output Turbocharged and Supercharged “GASOLINE” engines. It also claims to have been formulated with the latest additive package components added to that base stock. It has no Motor Oil Industry certifications, but claims the formula passed the tests required for API SN. And it claims superior wear protection and high temperature stability, both of which proved to be true in my Engineering tests. In addition, it also claims to have a very high Viscosity Index value, which helps against fuel dilution concerns. The higher the Viscosity Index value, the less the oil’s viscosity is reduced as it heats up.
zinc = TBD
phos = TBD
moly = TBD
This oil was tested Summer 2018.
The psi value of this oil, which came from testing it at the normal operating test temperature of 230*F, put it in the FANTASTIC Wear Protection Category.
I also went on to test this oil at the much higher temperature of 275*F. At that elevated temperature, any hotter and thinner oil is expected to experience a drop in Wear Protection Capability. This oil had only an extremely small 0.7% drop in capability. Even at that elevated temperature, it produced 129,486 psi, which still kept this much hotter oil in the FANTASTIC Wear Protection Category.
I also tested this oil for its onset of thermal breakdown point, which was 275*F.
This was the first biobased motor oil I ever tested. And its performance was EXTREMELY IMPRESSIVE. These results probably surprise a lot of people, since this oil wasn’t even made from petroleum base stock. So it appears, there could be a very bright future for biobased motor oil, if they are formulated well.
And the test data produced by this biobased oil, further backs up what I have said about a motor oil’s “base stock” NOT being all that critical, it is the “additive package” that IS critical.
9. Prolong Engine Treatment added to 5W30 Castrol GTX, API SN conventional = 130,366 psi
This oil on its own WITHOUT the Prolong Engine Treatment added to it, has a wear protection capability of 95,392 psi. With the recommended amount of Prolong added per qt, its wear protection capability “WENT UP 37%”.
WARNING!!! Prolong Engine Treatment contains chlorine. As a result, there have been legal issues with this product because of chlorine caused engine damage. And Prolong also settled with the FTC over unsubstantiated claims they made about their product’s capability. The psi data here provides information on wear protection capability ONLY! But, it does NOT provide any information on the long term effects of this product’s chlorine.
Chlorine’s long term corrosive damage, outweighs any short term friction reduction benefit. Chlorine is so corrosive that the motor oil industry stopped using chlorine compounds as part off factory additive packages, decades ago. In lab testing, Prolong showed to contain a startling high 30% chlorine. Using an aftermarket additive containing chlorine, is extremely risky, and is playing Russian Roulette with your engine. Prolong provides no benefit to stock engines, or other engines that are designed and built properly, that is worth risking serious long term engine damage.
Aftermarket motor oil additives ruin and oil’s carefully balanced factory additive package, making the oil WORSE OVERALL than it was to begin with, no matter what it may or may not do for the wear protection capability. The test data on Prolong is included in my Ranking List for informational purposes only, because of requests I have received about testing this product. But, I do NOT endorse it, and would never recommend its use.
It is always best to simply choose a highly ranked motor oil from my Wear Protection Ranking List in the first place, which will NOT need any help. Then use it just as it comes, right out of the bottle with NO aftermarket additives, and your engine will be well protected.
10. 0W40 Mobil 1 “FS” European Car Formula, ACEA A3/B3, A3/B4, API SN, synthetic = 127,221 psi
This new oil replaces the older version called, 0W40 Mobil 1, European Formula, API SN, synthetic. See below for the older version’s ranking position.
zinc = TBD
phos = TBD
moly = TBD
This new “FS” version was tested in Summer 2016.
However, a 40wt hot viscosity rated motor oil is too thick to be ideal for most engines. It is best to select the thinnest motor oil viscosity that will still provide acceptable “hot” oil pressure. And you do NOT need to select the “highest rated” motor oil, just as it comes right out of the bottle, from this Wear Protection Ranking List. There are many highly ranked oils here, that will provide your engine with excellent wear protection. So, you have many oils to choose from.
I also went on to test this oil at the much higher temperature of 275*F. At that elevated temperature, any hotter and thinner oil is expected to experience a drop in Wear Protection Capability. This oil did have a 16% drop in capability. But, even at that elevated temperature, it produced an impressive 106,876 psi, which put this much hotter and thinner oil in the INCREDIBLE Wear Protection Category.
I also tested this oil to find out its onset of thermal breakdown, which was 280F.
1. 5W30 Quaker State “Full Synthetic” (abbreviated QSFS), dexos 1 Gen 2, ILSAC GF-6A, API SP = 152,674 psi
And that psi value sets a WHOPPING NEW ALL-TIME RECORD for motor oils that I have put through my Engineering Torture Test on motor oil. It was tested in Spring 2021.
This new 5W30 Quaker State “Full Synthetic” motor oil replaces the previous 5W30 Quaker State “Ultimate Durability” (abbreviated QSUD) synthetic.
zinc = TBD
phos = TBD
moly = TBD
The psi value of this new oil, which came from testing it at the normal operating test temperature of 230*F, put it in the FANTASTIC Wear Protection Category. However, I went on to also test this oil at the much higher temperature of 275*F. At that elevated temperature, most hotter and thinner oils typically experience a drop in Wear Protection Capability. But, even at that elevated temperature, this oil produced an extremely impressive 148,133 psi, which was only a small 3% drop in capability. And that value still kept this much hotter and thinner oil in the FANTASTIC Wear Protection Category.
I also tested this oil to find out its onset of thermal breakdown, which was 290*F.
This new oil was purchased at Walmart. And its truly amazing performance is further proof that Walmart is selling legitimate motor oil, even though their prices are extremely low compared to typical Auto Parts Stores. Many of us who have been devoted users of the previous Quaker State “Ultimate Durability” motor oil, were concerned that Quaker State’s Corporate bean counters might get their hands on this new Quaker State “Full Synthetic” oil, and cut costs that would ruin the oil. Fortunately, as it turned out, that did not happen. And in fact, now this latest new 5W30 Quaker State “Full Synthetic” motor oil, is BY FAR, the BEST PERFORMING motor oil that I have ever tested. This is absolute proof that Quaker State REALLY knows how to formulate motor oil.
This new “Full Synthetic” motor oil has set the bar so high, that it is the oil I will be using in my own vehicles from stock to High Performance, from now on. And it is the motor oil that I will recommend to my Blog readers for most water cooled, gasoline powered engines, that can use 5W30. This is especially THE “go to” motor oil for traditional flat tappet engines to provide the utmost in protection against wiped cam lobes.
Never say never, but it is hard to imagine another motor oil ever producing numbers this amazing. Here is a back to back comparison of the new 5W30 Quaker State “Full Synthetic” and the old 5W30 Quaker State “Ultimate Durability”.
NOTE: The Higher the psi value, the Better the wear protection capability. And the Higher the onset of thermal breakdown value, the Higher the oil temperature can reach before the oil begins to deteriorate due to heat.
QSFS at 230*F = 152,674 psi
QSFS at 275*F = 148,133 psi
QSFS onset of thermal breakdown = 290*F
QSUD at 230*F = 133,125 psi
QSUD at 275*F = 115,764 psi
QSUD onset of thermal breakdown = 275*F.
The only possible concern about this amazing new 5W30 Quaker State “Full Synthetic” motor oil, is that it might be “too good” for use in wet clutch motorcycles. Because of the potential for possible clutch slipping. So, testing will be required to determine that.
2. Prolong Engine Treatment added to 5W30 Pennzoil Ultra, API SN synthetic = 136,658 psi
This oil on its own WITHOUT the Prolong Engine Treatment added to it, has a wear protection capability of 92,569 psi. With the recommended amount of Prolong added per qt, its wear protection capability “WENT UP 48%”.
WARNING!!! Prolong Engine Treatment contains chlorine. As a result, there have been legal issues with this product because of chlorine caused engine damage. And Prolong also settled with the FTC over unsubstantiated claims they made about their product’s capability. The psi data here provides information on wear protection capability ONLY! But, it does NOT provide any information on the long term effects of this product’s chlorine.
Chlorine’s long term corrosive damage, outweighs any short term friction reduction benefit. Chlorine is so corrosive that the motor oil industry stopped using chlorine compounds as part of factory additive packages, decades ago. In lab testing, Prolong showed to contain a startling high 30% chlorine. Using an aftermarket additive containing chlorine, is extremely risky, and is playing Russian Roulette with your engine. Prolong provides no benefit to stock engines, or other engines that are designed and built properly, that is worth risking serious long term engine damage.Aftermarket motor oil additives ruin an oil’s carefully balanced factory additive package, making the oil WORSE OVERALL than it was to begin with, no matter what it may or may not do for the wear protection capability. The test data on Prolong is included in my Ranking List for informational purposes only, because of requests I have received about testing this product. But, I do NOT endorse it, and would never recommend its use.
It is always best to simply choose a highly ranked motor oil from my Wear Protection Ranking List in the first place, which will NOT need any help. Then use it just as it comes, right out of the bottle with NO aftermarket additives, and your engine will be well protected.
3. 5W30 Tribodyn, synthetic = 135,434 psi
This oil has no API certifications, but the bottle claims that the oil meets the API SN specs. The bottle also says do NOT use this as break-in oil, and also that this oil is NOT recommended for wet clutch applications. It also cautions to shake the bottle well before use. NOTE: I always thoroughly shake every bottle of oil before performing my Engineering Torture Test on it. This oil is made in the U.S.A, and was tested summer 2020.
zinc = TBD
phos = TBD
moly = TBD
The psi value of this oil, which came from testing it at the normal operating test temperature of 230*F, put it in the FANTASTIC Wear Protection Category. However, I went on to also test this oil at the much higher temperature of 275*F. At that elevated temperature, most hotter and thinner oils typically experience a drop in Wear Protection Capability. However, this is one of those rare motor oils that produced an increase in its wear protection capability at higher temperature. It produced 143,801 psi at 275*F, which was up 6% from its 230*F value. And even at that elevated temperature, this much hotter and thinner oil was of course still in the FANTASTIC Wear Protection Category. I also tested this oil to find out its onset of thermal breakdown, which was 280*F.
At the time of this writing, I had tested 240 motor oils. And this oil produced the highest wear protection psi values I have ever seen from a motor oil just as it comes, right out of the bottle. Very impressive for an oil that few people have even heard of. However, it fell wildly short of the wear protection capability that this maker claimed it produced in a European University wear protection capability test. In that test, they claimed 5W30 Tribodyn street oil produced 54 times, yes 54 times as much psi as 0W40 Amsoil Signature Series oil. Of course a claim like that is totally absurd, and insults our intelligence. As you can see just below, Amsoil Signature Series oils were the highest ranked oils of all the oils I had tested, until I did this test on 5W30 Tribodyn synthetic oil. And the Tribodyn actually produced only slightly better psi numbers than Amsoil. Buyer beware of blatant false advertising.
4. 0W30 Ravenol VSW, USVO (Ultra Strong Viscosity Oil), synthetic = 135,395 psi
This low friction motor oil has an ACEA C3 certification, and is for passenger car gasoline or diesel engines with or without turbocharging or direct injection. This very impressive motor oil is made in Germany, and was tested in early 2021.
The psi value of this oil, which came from testing it at the normal operating test temperature of 230*F, put it in the FANTASTIC Wear Protection Category. And I also went on to test this oil at the much higher temperature of 275*F. At that elevated temperature, any hotter and thinner oil is expected to experience a drop in Wear Protection Capability. This oil had only a small 4% drop in capability. But, even at that elevated temperature, it produced an impressive 129,754 psi, which still kept this much hotter and thinner oil in the FANTASTIC Wear Protection Category.
I also tested this oil to find out its onset of thermal breakdown, which was a somewhat disappointing 265*F. NOTE: Motor oils do NOT stop working when they exceed the onset of thermal breakdown point. They just begin to slowly deteriorate.
.5. 0W20 Amsoil Signature Series, synthetic = 134,840 psi
The bottle does not have an API symbol, but it claims the oil can be used in applications that require API SN, GM dexos 1, ACEA A1/B1. It also claims to provide 75% better wear protection than required by the API SN specification. And it claims 50% more cleaning power than Amsoil OE motor oil.
zinc = TBD
phos = TBD
moly = TBD
This oil was tested Fall 2017. And it produced the highest psi value ever seen in my testing, from “ANY” motor oil just as it comes right out of the bottle, with no aftermarket additives. Very impressive. My test results confirm that Amsoil’s claim of this oil providing exceptional wear protection, is true. And this is further proof that you do NOT need heavy thick viscosity to provide such impressive wear protection.
As it stands in Fall 2017, Amsoil Signature Series synthetic motor oils, hold the top two positions in my Wear Protection Ranking List for oils just as they come, right out of the bottle, with no aftermarket additives. Motor oils have to be EXTREMELY GOOD to perform that well in my Engineering torture test on motor oil. Amsoil knows what they are doing, and they have set the bar to a new very high level.
.6. 5W30 Amsoil Signature Series, synthetic = 134,352 psi
The bottle does not have an API symbol, but it claims the oil can be used in applications that require API SN, GM dexos 1, ACEA A5/B5, A1/B1. It also claims to provide 75% better wear protection than required by the API SN specification (though it does say that claim is in reference to their 0W20 Amsoil Signature Series synthetic). And it claims 50% more cleaning power than Amsoil OE motor oil.
zinc = TBD
phos = TBD
moly = TBD
This oil was tested Fall 2017.
The psi value of this oil, which came from testing it at the normal operating test temperature of 230*F, put it in the FANTASTIC Wear Protection Category. And it produced the highest psi value ever seen in my testing, from any 5W30 motor oil just as it comes right out of the bottle, with no aftermarket additives. Very impressive. My test results confirm that Amsoil’s claim of this oil providing exceptional wear protection, is true. This oil could well be “THE MOTOR OIL OF CHOICE” for most High HP engines, including Bad Boy traditional American flat tappet pushrod engines, or for virtually any engine where 5W30 is used.
And I also went on to test this oil at the much higher temperature of 275*F. At that elevated temperature, any hotter and thinner oil is expected to experience a drop in Wear Protection Capability. This oil had only a modest 7% drop in capability. But, even at that elevated temperature, it produced an impressive 124,573 psi, which still kept this much hotter and thinner oil in the FANTASTIC Wear Protection Category.
In addition, I also tested this oil at 130*F, which is an oil temperature in the middle of the range of the Sequence IVA Wear Test (ASTM D6891) = 123,882 psi, which still had it in the FANTASTIC Wear Protection Category, even though this value is about an 8% drop from the normal 230*F test temperature’s psi value. NOTE: An engine warming up, will transition right past this temperature as it heats up to its normal operating temperature.
As it stands in Fall 2017, Amsoil Signature Series synthetic motor oils, hold the top two positions in my Wear Protection Ranking List for oils just as they come, right out of the bottle, with no aftermarket additives. Motor oils have to be EXTREMELY GOOD to perform that well in my Engineering torture test on motor oil. Amsoil knows what they are doing, and they have set the bar to a new very high level.
. 7. 5W30 Quaker State Ultimate Durability, dexos 1 – Gen 2, API SN “Plus”, synthetic (green bottle) = 133,125 psi
NOTE: THIS MOTOR OIL WAS DISCONTINUED, AND REPLACED BY QUAKER STATE “FULL SYNTHETIC” IN EARLY 2021. SEE ABOVE FOR THE NEW OIL’S RANKING POSITION.
This oil was tested again in late 2019 for two reasons:
1. It became available with the API SN “Plus” certification, so there was an interest in seeing if there were any changes in its performance.
2. This oil was purchased at Walmart. And that was significant because it was so shockingly cheap at Walmart, compared to mainstream Auto Parts Stores, that there were concerns that Walmart might be selling counterfeit oil. Here’s why:
This oil was purchased at Walmart in late 2019, where the price was about $6.00 per quart bottle, and about $20.00 per 5 quart jug. At the same time, a few miles away, this oil’s price at Pep Boys Auto Parts Store was about $9.00 per quart, and about $35.00 per 5 quart jug. So, there was a need to find out if this oil being sold so cheap at Walmart was legitimate or not. Sure, you could say that Walmart makes such large purchases that it gets a break on price. But then, you could say the same thing about Pep Boys Auto Parts chain stores. But, the proof was in the pudding as they say. And as you can see by the psi value and ranking position above, this is the best performing 5W30 Quaker State Ultimate Durability, that I’ve ever tested. So, Walmart gets a clean bill of health. They are selling legitimate QSUD, and there is nothing to be concerned about. Now, we would have a hard time justifying buying this oil anywhere besides Walmart.
zinc = TBD
phos = TBD
moly = TBD
The psi value of this oil, which came from testing it at the normal operating test temperature of 230*F, put it in the FANTASTIC Wear Protection Category.
However, I went on to also test this oil at the much higher temperature of 275*F. At that elevated temperature, any hotter and thinner oil is expected to experience a drop in Wear Protection Capability. And this oil did have a 13% drop in capability. However, even at that reduced value down to 115,764 psi, this much hotter and thinner oil was in the INCREDIBLE Wear Protection Category. I also tested this oil to find out its onset of thermal breakdown, which was 275*F8. 5W30 Renewable Lubricants, Super High Performance Passenger Vehicle, Bio-SynXtra, motor oil = 130,436 psi
This patented biobased motor oil uses agricultural vegetable oil base stock, and is biodegradable. It claims to provide optimum performance in newer High Output Turbocharged and Supercharged “GASOLINE” engines. It also claims to have been formulated with the latest additive package components added to that base stock. It has no Motor Oil Industry certifications, but claims the formula passed the tests required for API SN. And it claims superior wear protection and high temperature stability, both of which proved to be true in my Engineering tests. In addition, it also claims to have a very high Viscosity Index value, which helps against fuel dilution concerns. The higher the Viscosity Index value, the less the oil’s viscosity is reduced as it heats up.
zinc = TBD
phos = TBD
moly = TBD
This oil was tested Summer 2018.
The psi value of this oil, which came from testing it at the normal operating test temperature of 230*F, put it in the FANTASTIC Wear Protection Category.
I also went on to test this oil at the much higher temperature of 275*F. At that elevated temperature, any hotter and thinner oil is expected to experience a drop in Wear Protection Capability. This oil had only an extremely small 0.7% drop in capability. Even at that elevated temperature, it produced 129,486 psi, which still kept this much hotter oil in the FANTASTIC Wear Protection Category.
I also tested this oil for its onset of thermal breakdown point, which was 275*F.
This was the first biobased motor oil I ever tested. And its performance was EXTREMELY IMPRESSIVE. These results probably surprise a lot of people, since this oil wasn’t even made from petroleum base stock. So it appears, there could be a very bright future for biobased motor oil, if they are formulated well.
And the test data produced by this biobased oil, further backs up what I have said about a motor oil’s “base stock” NOT being all that critical, it is the “additive package” that IS critical.
9. Prolong Engine Treatment added to 5W30 Castrol GTX, API SN conventional = 130,366 psi
This oil on its own WITHOUT the Prolong Engine Treatment added to it, has a wear protection capability of 95,392 psi. With the recommended amount of Prolong added per qt, its wear protection capability “WENT UP 37%”.
WARNING!!! Prolong Engine Treatment contains chlorine. As a result, there have been legal issues with this product because of chlorine caused engine damage. And Prolong also settled with the FTC over unsubstantiated claims they made about their product’s capability. The psi data here provides information on wear protection capability ONLY! But, it does NOT provide any information on the long term effects of this product’s chlorine.
Chlorine’s long term corrosive damage, outweighs any short term friction reduction benefit. Chlorine is so corrosive that the motor oil industry stopped using chlorine compounds as part off factory additive packages, decades ago. In lab testing, Prolong showed to contain a startling high 30% chlorine. Using an aftermarket additive containing chlorine, is extremely risky, and is playing Russian Roulette with your engine. Prolong provides no benefit to stock engines, or other engines that are designed and built properly, that is worth risking serious long term engine damage.
Aftermarket motor oil additives ruin and oil’s carefully balanced factory additive package, making the oil WORSE OVERALL than it was to begin with, no matter what it may or may not do for the wear protection capability. The test data on Prolong is included in my Ranking List for informational purposes only, because of requests I have received about testing this product. But, I do NOT endorse it, and would never recommend its use.
It is always best to simply choose a highly ranked motor oil from my Wear Protection Ranking List in the first place, which will NOT need any help. Then use it just as it comes, right out of the bottle with NO aftermarket additives, and your engine will be well protected.
10. 0W40 Mobil 1 “FS” European Car Formula, ACEA A3/B3, A3/B4, API SN, synthetic = 127,221 psi
This new oil replaces the older version called, 0W40 Mobil 1, European Formula, API SN, synthetic. See below for the older version’s ranking position.
zinc = TBD
phos = TBD
moly = TBD
This new “FS” version was tested in Summer 2016.
However, a 40wt hot viscosity rated motor oil is too thick to be ideal for most engines. It is best to select the thinnest motor oil viscosity that will still provide acceptable “hot” oil pressure. And you do NOT need to select the “highest rated” motor oil, just as it comes right out of the bottle, from this Wear Protection Ranking List. There are many highly ranked oils here, that will provide your engine with excellent wear protection. So, you have many oils to choose from.
I also went on to test this oil at the much higher temperature of 275*F. At that elevated temperature, any hotter and thinner oil is expected to experience a drop in Wear Protection Capability. This oil did have a 16% drop in capability. But, even at that elevated temperature, it produced an impressive 106,876 psi, which put this much hotter and thinner oil in the INCREDIBLE Wear Protection Category.
I also tested this oil to find out its onset of thermal breakdown, which was 280F.
Last edited by 98hotrodfatboy; May 14, 2021 at 03:08 PM.
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70. 20W50 Valvoline VR1 Racing Oil, conventional = 97,677 psi
This oil claims high zinc/phos.
zinc = TBD
phos = TBD
moly = TBD
It was tested Summer 2019. The psi value above, produced by this oil, came from testing it at the normal operating water-cooled engine test temperature of 230*F, which put it in the OUTSTANDING Wear Protection Category. But, this oil is way too thick for most any water-cooled engine. However, it is ideal for air cooled engines, which cannot control their oil temperatures well. And it is popular with air-cooled Harley Davidson Motorcycle Owners. So, for their benefit, I also tested this oil at the much higher test temperature of 275*F.
At that elevated temperature, any hotter and thinner oil is expected to experience a drop in Wear Protection Capability. But, this oil only had a very small 3% drop in capability. And even at that elevated temperature, it produced 94,850 psi, which still kept this much hotter and thinner oil in the OUTSTANDING Wear Protection Category.
I also tested this oil to find out its onset of thermal breakdown, which was an impressive 285*F.
76. 20W50 Castrol GTX, API SN conventional = 96,514 psi
zinc = 610 ppm
phos = 754 ppm
moly = 94 ppm
77. 30 wt Red Line Race Oil synthetic = 96,470 psi
zinc = 2207 ppm
phos = 2052 ppm
moly = 1235 ppm
NOTE: This oil is suitable for short term racing use only, and is not suitable for street use.
15W40 “NEW” SHELL ROTELLA T Diesel Oil conventional, API CJ-4, CI-4 Plus, CH-4, CF-4,CF/SM = 72,022 psi
15W40 “OLD” SHELL ROTELLA T Diesel Oil conventional, API CI-4 PLUS, CI-4, CH-4,CG-4,CF-4,CF,SL, SJ, SH = 71,214 psi
As you can see, the new Shell Rotella Gas Truck oil provides MUCH HIGHER wear protection capability than the Shell Rotella T Diesel oils tested previously. This is further proof that Traditional Heavy Duty Diesel oil is NOT a good choice for High Performance gas engines.
106. 5W20 Royal Purple API SN synthetic = 90,434 psi
zinc = 964 ppm
phos = 892 ppm
moly = 0 ppm
.
.
107. 0W40 Amsoil Max-Duty Signature Series Diesel oil, API CK-4/SN, CJ-4, CI-4+, CF, ACEA E9, E7, synthetic = 90,307 psi
zinc = TBD
phos = TBD
moly = TBD
This oil was tested late 2017.
Comparing the three Amsoil Max-Duty Signature Series Diesel Oils tested late 2017/early 2018:
0W40 = 90,307 psi
5W40 = 87,154 psi
15W40 = 87,881 psi
Oil psi value differences of less than 10% are not significant, and oils within that range can be considered approximately equivalent. These three oils are all within a range of about 3.5%, which is very consistent for oils in the same product line. Therefore, any of these three oils would provide essentially the same level of wear protection. But, the 0W40 will flow the best when cold, making it the top choice of the three.
121. 15W40 Amsoil Max-Duty Signature Series Diesel Oil, API CK-4/SN, CJ-4, CI-4+, CF, ACEA E9, E7 synthetic = 87,881 psi
It claims 6X more wear protection than required by Detroit Diesel DD13 Scuffing Test.
zinc = TBD
phos = TBD
moly = TBD
This oil was tested early 2018.
Comparing the three Amsoil Max-Duty Signature Series Diesel Oils tested late 2017/early 2018:
0W40 = 90,307 psi
5W40 = 87,154 psi
15W40 = 87,881 psi
Oil psi value differences of less than 10% are not significant, and oils within that range can be considered approximately equivalent. These three oils are all within a range of about 3.5%, which is very consistent for oils in the same product line. Therefore, any of these three oils would provide essentially the same level of wear protection. But, the 0W40 will flow the best when cold, making it the top choice of the three.
130. 15W40 RED LINE Diesel Oil synthetic, API CJ-4/CI-4 PLUS/CI-4/CF/CH-4/CF-4/SM/SL/SH/EO-O = 85,663 psi
zinc = 1615 ppm
phos = 1551 ppm
moly = 173 ppm
133. 20W50 Millers Classic Performance Oil, API SJ, conventional = 84,764 psi
zinc = TBD
phos = TBD
moly = TBD
Claims high ZDDP level. It comes from England in 1 Liter bottles, which is slightly more than a quart, and is available in the U.S.
138. 20W50 Royal Purple API SN synthetic = 83,487 psi
zinc = 588 ppm
phos = 697 ppm
moly = 0 ppm
139. 20W50 Kendall GT-1 High Performance with liquid titanium, API SN conventional = 83,365 psi
zinc = 991 ppm
phos = 1253 ppm
moly = 57 ppm
titanium = 84 ppm
.
143. 5W30 Mobil 1 Annual Protection, API SN, GM dexos 1 approved, ACEA A1/B1, synthetic = 82,486 psi
zinc = TBD
phos = TBD
moly = TBD
This oil was tested Fall 2018.
I had resisted requests to test this oil ever since it was introduced, until now. That is because I did not want to have anything to do with the massive false promotion of this oil, with its ridiculously bogus claim that it can go 20,000 miles between oil changes. The truth is that this oil is intended only to maximize profits for Mobil. Its pricing was originally about $15.00 per quart, while Mobil 1’s other synthetic oils were priced at about $9.50 per quart. But, by the time this oil was tested here, its price had dropped by $3.00, to $12.00 per quart. The drop in price was apparently due to poor sales at the original $15.00 per quart price. Of course it is common knowledge that demand drives price in the marketplace.
I finally decided to test it at this time, because people who were gullible enough to fall for this oil’s false advertising, deserved to see Engineering test data that shows just how this oil actually performs, regarding wear protection capability, its onset of thermal breakdown point, and to understand why using this ridiculously long oil change interval is NOT in the best interest of their engine.
The claims and advertising for this motor oil are amazingly false, even for motor oil products which are famous for false advertising. On the bottle it says to change the oil at 1 year or 20,000 miles, whichever comes first, unless your vehicle is under warranty. In that case, it says to follow the manufacturer’s oil change recommendation. It also says their 1 year or 20,000 mile oil change recommendation is NOT for vehicles subjected to severe usage, such as racing, trailer pulling, hauling, commercial use, use in dusty conditions, or prolonged idling. So, the only thing left, is that they aim this oil at normal daily driver vehicles that are out of warranty.
The heavily promoted big claim that they push, about being able to use this oil for 20,000 miles, is disgracefully false. Mobil should be ashamed of themselves for this Marketing scam. By the time a normal daily driven street vehicle reaches 5,000 miles, even on well formulated synthetic oil, that oil is dark, dirty, contaminated, is becoming more and more diluted by fuel blow-by as time goes on, has been suffering some thermal breakdown deterioration, and fine abrasive wear accumulations and insolubles will have started to build-up, that are not pulled out by the oil filter. So, by that point, any motor oil is in definite need of changing. And by changing it at 5,000 miles, you will be doing what’s best for your engine, and you will also prevent any concerns about sludge formation. People who go much longer than a 5,000 mile oil change interval, just don’t understand the numerous technical reasons why extended oil change intervals are NOT a good idea for their engine, even if they use very expensive synthetic oil marketed as extended change interval oil. See my Tech Article 25 for more details.
This oil’s bottle also says that it is the ultimate full synthetic oil, and that it maximizes wear protection, both of which are laughably false, considering how poor it performed in my Engineering testing for wear protection. And the fact that in my overall testing, it is among the worst Mobil 1 oils regarding wear protection capability.
And to add insult to injury, the onset of thermal breakdown for this oil was at a very low and disappointing 235*F, which is among the very worst I’ve seen. Buyer beware, you can never trust motor oil Advertising to tell the truth.
Originally, I was just completely disgusted with their Marketing Scam about insane 20,000 mile oil changes. But, I had expected it to perform very well regarding wear protection capability and its onset of thermal breakdown. After all, they started out charging a WHOPPING 50% more for this oil. And most people would expect to get something special for such a high price. So, I was as SHOCKED as anyone, to see its pathetic performance regarding wear protection capability and thermal breakdown, when it is such a high priced and massively promoted newly formulated motor oil.
All in all, by the measures that count, this still overpriced oil is a very poor choice for any engine, when so many other far superior motor oils are readily available, that cost even less.
158. 15W40 ROYAL PURPLE Diesel Oil synthetic, API CJ-4 /SM, CI-4 PLUS, CH-4, CI-4 = 76,997 psi
zinc = TBD
phos = TBD
moly = TBD
166. 20W50 Mobil 1 V-Twin 4 Cycle Motorcycle Oil, API SJ, synthetic = 75,855 psi
zinc = TBD
phos = TBD
moly = TBD
179. 15W40 MOBIL DELVAC 1300 SUPER Diesel Oil conventional, API CJ-4, CI-4 Plus, CI-4, CH-4/SM, SL = 73,300 psi
zinc = 1297 ppm
phos = 1944 ppm
moly = 46 ppm
185. 15W40 “NEW” SHELL ROTELLA T Diesel Oil conventional, API CJ-4, CI-4 Plus, CH-4, CF-4,CF/SM = 72,022 psi
zinc = 1454 ppm
phos = 1062 ppm
moly = 0 ppm
194. 15W50 Mobil 1, API SN synthetic = 70,235 psi
zinc = 1,133 ppm
phos = 1,168 ppm
moly = 83 ppm
216. “ZDDPlus” added to Royal Purple 20W50, API SN, synthetic = 63,595 psi
zinc = 2436 ppm (up 1848 ppm)
phos = 2053 ppm (up 1356 ppm)
moly = 2 ppm (up 2 ppm)
The amount of ZDDPlus added to the oil, was the exact amount the manufacturer called for on the bottle. And the resulting psi value here was 24% LOWER than this oil had BEFORE the ZDDPlus was added to it. Most major Oil Companies say to NEVER add anything to their oils, because adding anything will upset the carefully balanced additive package, and ruin the oil’s chemical composition. And that is precisely what we see here. Adding ZDDPlus SIGNIFICANTLY REDUCED this oil’s wear prevention capability. Just the opposite of what was promised.
233. 0W Mobil 1 Racing Oil = 55,080 psi
zinc = 1952 ppm
phos = 1671 ppm
moly = 1743 ppm
242. 15W30 Yamalube, Performance Full-Synthetic with Ester, Motorcycle oil, JASO MA (Gold Bottle) = 0 psi, yes 0 psi, that is NOT a typo. This oil was tested several times, exactly the same as every other motor oil is tested on this Blog. And this oil COMPLETELY FAILED and SEIZED EVERY TIME it was tested, which resulted in a 0 psi value. No other oil has ever performed so badly when subjected to the Engineering torture testing that every oil is subjected to here. For better or worse, I can only post the test results the way they came out.
This oil was tested Spring 2019.
This oil claims high zinc/phos.
zinc = TBD
phos = TBD
moly = TBD
It was tested Summer 2019. The psi value above, produced by this oil, came from testing it at the normal operating water-cooled engine test temperature of 230*F, which put it in the OUTSTANDING Wear Protection Category. But, this oil is way too thick for most any water-cooled engine. However, it is ideal for air cooled engines, which cannot control their oil temperatures well. And it is popular with air-cooled Harley Davidson Motorcycle Owners. So, for their benefit, I also tested this oil at the much higher test temperature of 275*F.
At that elevated temperature, any hotter and thinner oil is expected to experience a drop in Wear Protection Capability. But, this oil only had a very small 3% drop in capability. And even at that elevated temperature, it produced 94,850 psi, which still kept this much hotter and thinner oil in the OUTSTANDING Wear Protection Category.
I also tested this oil to find out its onset of thermal breakdown, which was an impressive 285*F.
76. 20W50 Castrol GTX, API SN conventional = 96,514 psi
zinc = 610 ppm
phos = 754 ppm
moly = 94 ppm
77. 30 wt Red Line Race Oil synthetic = 96,470 psi
zinc = 2207 ppm
phos = 2052 ppm
moly = 1235 ppm
NOTE: This oil is suitable for short term racing use only, and is not suitable for street use.
15W40 “NEW” SHELL ROTELLA T Diesel Oil conventional, API CJ-4, CI-4 Plus, CH-4, CF-4,CF/SM = 72,022 psi
15W40 “OLD” SHELL ROTELLA T Diesel Oil conventional, API CI-4 PLUS, CI-4, CH-4,CG-4,CF-4,CF,SL, SJ, SH = 71,214 psi
As you can see, the new Shell Rotella Gas Truck oil provides MUCH HIGHER wear protection capability than the Shell Rotella T Diesel oils tested previously. This is further proof that Traditional Heavy Duty Diesel oil is NOT a good choice for High Performance gas engines.
106. 5W20 Royal Purple API SN synthetic = 90,434 psi
zinc = 964 ppm
phos = 892 ppm
moly = 0 ppm
.
.
107. 0W40 Amsoil Max-Duty Signature Series Diesel oil, API CK-4/SN, CJ-4, CI-4+, CF, ACEA E9, E7, synthetic = 90,307 psi
zinc = TBD
phos = TBD
moly = TBD
This oil was tested late 2017.
Comparing the three Amsoil Max-Duty Signature Series Diesel Oils tested late 2017/early 2018:
0W40 = 90,307 psi
5W40 = 87,154 psi
15W40 = 87,881 psi
Oil psi value differences of less than 10% are not significant, and oils within that range can be considered approximately equivalent. These three oils are all within a range of about 3.5%, which is very consistent for oils in the same product line. Therefore, any of these three oils would provide essentially the same level of wear protection. But, the 0W40 will flow the best when cold, making it the top choice of the three.
121. 15W40 Amsoil Max-Duty Signature Series Diesel Oil, API CK-4/SN, CJ-4, CI-4+, CF, ACEA E9, E7 synthetic = 87,881 psi
It claims 6X more wear protection than required by Detroit Diesel DD13 Scuffing Test.
zinc = TBD
phos = TBD
moly = TBD
This oil was tested early 2018.
Comparing the three Amsoil Max-Duty Signature Series Diesel Oils tested late 2017/early 2018:
0W40 = 90,307 psi
5W40 = 87,154 psi
15W40 = 87,881 psi
Oil psi value differences of less than 10% are not significant, and oils within that range can be considered approximately equivalent. These three oils are all within a range of about 3.5%, which is very consistent for oils in the same product line. Therefore, any of these three oils would provide essentially the same level of wear protection. But, the 0W40 will flow the best when cold, making it the top choice of the three.
130. 15W40 RED LINE Diesel Oil synthetic, API CJ-4/CI-4 PLUS/CI-4/CF/CH-4/CF-4/SM/SL/SH/EO-O = 85,663 psi
zinc = 1615 ppm
phos = 1551 ppm
moly = 173 ppm
133. 20W50 Millers Classic Performance Oil, API SJ, conventional = 84,764 psi
zinc = TBD
phos = TBD
moly = TBD
Claims high ZDDP level. It comes from England in 1 Liter bottles, which is slightly more than a quart, and is available in the U.S.
138. 20W50 Royal Purple API SN synthetic = 83,487 psi
zinc = 588 ppm
phos = 697 ppm
moly = 0 ppm
139. 20W50 Kendall GT-1 High Performance with liquid titanium, API SN conventional = 83,365 psi
zinc = 991 ppm
phos = 1253 ppm
moly = 57 ppm
titanium = 84 ppm
.
143. 5W30 Mobil 1 Annual Protection, API SN, GM dexos 1 approved, ACEA A1/B1, synthetic = 82,486 psi
zinc = TBD
phos = TBD
moly = TBD
This oil was tested Fall 2018.
I had resisted requests to test this oil ever since it was introduced, until now. That is because I did not want to have anything to do with the massive false promotion of this oil, with its ridiculously bogus claim that it can go 20,000 miles between oil changes. The truth is that this oil is intended only to maximize profits for Mobil. Its pricing was originally about $15.00 per quart, while Mobil 1’s other synthetic oils were priced at about $9.50 per quart. But, by the time this oil was tested here, its price had dropped by $3.00, to $12.00 per quart. The drop in price was apparently due to poor sales at the original $15.00 per quart price. Of course it is common knowledge that demand drives price in the marketplace.
I finally decided to test it at this time, because people who were gullible enough to fall for this oil’s false advertising, deserved to see Engineering test data that shows just how this oil actually performs, regarding wear protection capability, its onset of thermal breakdown point, and to understand why using this ridiculously long oil change interval is NOT in the best interest of their engine.
The claims and advertising for this motor oil are amazingly false, even for motor oil products which are famous for false advertising. On the bottle it says to change the oil at 1 year or 20,000 miles, whichever comes first, unless your vehicle is under warranty. In that case, it says to follow the manufacturer’s oil change recommendation. It also says their 1 year or 20,000 mile oil change recommendation is NOT for vehicles subjected to severe usage, such as racing, trailer pulling, hauling, commercial use, use in dusty conditions, or prolonged idling. So, the only thing left, is that they aim this oil at normal daily driver vehicles that are out of warranty.
The heavily promoted big claim that they push, about being able to use this oil for 20,000 miles, is disgracefully false. Mobil should be ashamed of themselves for this Marketing scam. By the time a normal daily driven street vehicle reaches 5,000 miles, even on well formulated synthetic oil, that oil is dark, dirty, contaminated, is becoming more and more diluted by fuel blow-by as time goes on, has been suffering some thermal breakdown deterioration, and fine abrasive wear accumulations and insolubles will have started to build-up, that are not pulled out by the oil filter. So, by that point, any motor oil is in definite need of changing. And by changing it at 5,000 miles, you will be doing what’s best for your engine, and you will also prevent any concerns about sludge formation. People who go much longer than a 5,000 mile oil change interval, just don’t understand the numerous technical reasons why extended oil change intervals are NOT a good idea for their engine, even if they use very expensive synthetic oil marketed as extended change interval oil. See my Tech Article 25 for more details.
This oil’s bottle also says that it is the ultimate full synthetic oil, and that it maximizes wear protection, both of which are laughably false, considering how poor it performed in my Engineering testing for wear protection. And the fact that in my overall testing, it is among the worst Mobil 1 oils regarding wear protection capability.
And to add insult to injury, the onset of thermal breakdown for this oil was at a very low and disappointing 235*F, which is among the very worst I’ve seen. Buyer beware, you can never trust motor oil Advertising to tell the truth.
Originally, I was just completely disgusted with their Marketing Scam about insane 20,000 mile oil changes. But, I had expected it to perform very well regarding wear protection capability and its onset of thermal breakdown. After all, they started out charging a WHOPPING 50% more for this oil. And most people would expect to get something special for such a high price. So, I was as SHOCKED as anyone, to see its pathetic performance regarding wear protection capability and thermal breakdown, when it is such a high priced and massively promoted newly formulated motor oil.
All in all, by the measures that count, this still overpriced oil is a very poor choice for any engine, when so many other far superior motor oils are readily available, that cost even less.
158. 15W40 ROYAL PURPLE Diesel Oil synthetic, API CJ-4 /SM, CI-4 PLUS, CH-4, CI-4 = 76,997 psi
zinc = TBD
phos = TBD
moly = TBD
166. 20W50 Mobil 1 V-Twin 4 Cycle Motorcycle Oil, API SJ, synthetic = 75,855 psi
zinc = TBD
phos = TBD
moly = TBD
179. 15W40 MOBIL DELVAC 1300 SUPER Diesel Oil conventional, API CJ-4, CI-4 Plus, CI-4, CH-4/SM, SL = 73,300 psi
zinc = 1297 ppm
phos = 1944 ppm
moly = 46 ppm
185. 15W40 “NEW” SHELL ROTELLA T Diesel Oil conventional, API CJ-4, CI-4 Plus, CH-4, CF-4,CF/SM = 72,022 psi
zinc = 1454 ppm
phos = 1062 ppm
moly = 0 ppm
194. 15W50 Mobil 1, API SN synthetic = 70,235 psi
zinc = 1,133 ppm
phos = 1,168 ppm
moly = 83 ppm
216. “ZDDPlus” added to Royal Purple 20W50, API SN, synthetic = 63,595 psi
zinc = 2436 ppm (up 1848 ppm)
phos = 2053 ppm (up 1356 ppm)
moly = 2 ppm (up 2 ppm)
The amount of ZDDPlus added to the oil, was the exact amount the manufacturer called for on the bottle. And the resulting psi value here was 24% LOWER than this oil had BEFORE the ZDDPlus was added to it. Most major Oil Companies say to NEVER add anything to their oils, because adding anything will upset the carefully balanced additive package, and ruin the oil’s chemical composition. And that is precisely what we see here. Adding ZDDPlus SIGNIFICANTLY REDUCED this oil’s wear prevention capability. Just the opposite of what was promised.
233. 0W Mobil 1 Racing Oil = 55,080 psi
zinc = 1952 ppm
phos = 1671 ppm
moly = 1743 ppm
242. 15W30 Yamalube, Performance Full-Synthetic with Ester, Motorcycle oil, JASO MA (Gold Bottle) = 0 psi, yes 0 psi, that is NOT a typo. This oil was tested several times, exactly the same as every other motor oil is tested on this Blog. And this oil COMPLETELY FAILED and SEIZED EVERY TIME it was tested, which resulted in a 0 psi value. No other oil has ever performed so badly when subjected to the Engineering torture testing that every oil is subjected to here. For better or worse, I can only post the test results the way they came out.
This oil was tested Spring 2019.
Thread Starter
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Seasoned HDF Member
Joined: Mar 2010
Posts: 21,117
Likes: 7,643
From: Poolville
It seems as if I'm asking for too much information... Therefore the generation of all the worthless remarks... Thanks but it's not what I was looking for...
Last edited by 98hotrodfatboy; May 14, 2021 at 08:25 PM.
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