What's in your tank?
Outstanding HDF Member
Joined: Aug 2012
Posts: 3,217
Likes: 90
From: Detroit
The worry about combustion chamber deposits from E10 is unfounded. You WILL get combustion chamber deposits from your factory head breathing ports to the air filter, but I find the benefits of burning the combustion byproducts much greater than the minor combustion chamber deposits you get from ingesting a bit of oil along with the oil mist. I do not like the "road draft" circa pre-1968 systems guys often install on their Harley by running hoses from the head ports to the ground, with or with out a filter. By not applying a vacuum to your crankcase you are not properly expelling combustion byproducts and your engine will look like a pre-1968 engine with similar sludge.
On combustion chamber deposits from alcohol, versus gasoline, I totally agree with Joe. Alcohol burns much cleaner than gasoline.
Last edited by Warp Factor; Feb 10, 2016 at 02:45 PM.
Seasoned HDF Member
Joined: Jun 2010
Posts: 9,332
Likes: 3,873
From: Upstate New York
I run my '94 Softail on either 93 octane E10 or 91 octane ethanol free gas (which has become available here in the last couple of years. Bike runs fine on either.
I do worry that I have a greater chance of getting bad gas buying premium instead of regular. Around here, premium may be as much as $.80 more per gallon than regular. That being the case, I suspect that very few people use it anymore, so nobody knows how long that premium has been sitting in the storage tanks.
Additives? Well, if I fill up near home, I'll add a dose of Star-tron to the gas, and I always add 2 oz. of Marvel Mystery oil to each tankful. Why? I guess that's the "mystery". 109,000 miles on the current motor and the heads have never been off, so I must be doing something right.
I do worry that I have a greater chance of getting bad gas buying premium instead of regular. Around here, premium may be as much as $.80 more per gallon than regular. That being the case, I suspect that very few people use it anymore, so nobody knows how long that premium has been sitting in the storage tanks.
Additives? Well, if I fill up near home, I'll add a dose of Star-tron to the gas, and I always add 2 oz. of Marvel Mystery oil to each tankful. Why? I guess that's the "mystery". 109,000 miles on the current motor and the heads have never been off, so I must be doing something right.
Thread Starter
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Ultimate HDF Member
Joined: Jul 2014
Posts: 5,649
Likes: 430
From: MASS_hole
That's impressive Uncle G. considering you circa 94 Harley wasn't fortified with all of the necessary bits and pieces required to withstand the apposed dangers of E10
Could it be that those treatments made all the difference?
Not bein the mechanically incline person I wish I was, I've no clue the damage that would have, or should have occurred otherwise??
Still not surprising you managed such feats, considering a few others here have achieved similar results.
Maybe Warp Factor is right!
Couldit be that Ethanol fuel really isn't all that bad afterall as long as you take the right precautions?
Could it be that those treatments made all the difference?
Not bein the mechanically incline person I wish I was, I've no clue the damage that would have, or should have occurred otherwise??
Still not surprising you managed such feats, considering a few others here have achieved similar results.
Maybe Warp Factor is right!
Couldit be that Ethanol fuel really isn't all that bad afterall as long as you take the right precautions?
Outstanding HDF Member
Joined: Jun 2014
Posts: 3,185
Likes: 189
From: 90210
That's impressive Uncle G. considering you circa 94 Harley wasn't fortified with all of the necessary bits and pieces required to withstand the apposed dangers of E10
Could it be that those treatments made all the difference?
Not bein the mechanically incline person I wish I was, I've no clue the damage that would have, or should have occurred otherwise??
Still not surprising you managed such feats, considering a few others here have achieved similar results.
Maybe Warp Factor is right!
Couldit be that Ethanol fuel really isn't all that bad afterall as long as you take the right precautions?
Could it be that those treatments made all the difference?
Not bein the mechanically incline person I wish I was, I've no clue the damage that would have, or should have occurred otherwise??
Still not surprising you managed such feats, considering a few others here have achieved similar results.
Maybe Warp Factor is right!
Couldit be that Ethanol fuel really isn't all that bad afterall as long as you take the right precautions?
https://www.rbracing-rsr.com/downloads/tts_tuning.pdf
Thread Starter
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Ultimate HDF Member
Joined: Jul 2014
Posts: 5,649
Likes: 430
From: MASS_hole
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Joe Kucinski
Outstanding HDF Member
Joined: Jun 2014
Posts: 3,185
Likes: 189
From: 90210
Splatttttt- pulled another gem out of my info file repository- really good well laid out doc on how HD EFI works, fuel lambda vs stoich, etc. good simple terms but plenty informative enough to grasp it.
http://www.808networks.com/pub/EFI B...ley delphi.pdf right click it and 'save as' to save the pdf to your computer, 4mb
http://www.808networks.com/pub/EFI B...ley delphi.pdf right click it and 'save as' to save the pdf to your computer, 4mb
Stellar HDF Member
Joined: Jan 2013
Posts: 2,721
Likes: 103
From: St. Louis, MO
Splatttttt- pulled another gem out of my info file repository- really good well laid out doc on how HD EFI works, fuel lambda vs stoich, etc. good simple terms but plenty informative enough to grasp it.
http://www.808networks.com/pub/EFI B...ley delphi.pdf right click it and 'save as' to save the pdf to your computer, 4mb
http://www.808networks.com/pub/EFI B...ley delphi.pdf right click it and 'save as' to save the pdf to your computer, 4mb