2 stroke oil
Road Master
Joined: Feb 2018
Posts: 806
Likes: 1,141
From: West Texas
No reason for it in a 4 cycle engine. On stuff with o2 sensors there would be noting but down side. You do want oil getting on the surface of these components in any appreciable amount. It masks the surface and can ruin them or make the must less effective. Also, these components are designed and calibrated to work with the ECM to get the correct fuel mixture to keep the engine running as designed. Why screw with that
Grand HDF Member
Joined: Sep 2009
Posts: 4,556
Likes: 1,846
From: Albuquerque, NM
this circulates around automotive forums from about the dawn of time. Marvel Mystery Oil, 2 stroke oil, ATF, etc, etc, etc. While it most likely wont hurt anything, it also likely isnt helping anything either. It does add (obviously) oil to the fuel that is said to "lubricate the valves", but if you have a sticky valve issue, you have larger problems.The oil can and will cause excessive carbon buildup in the top end on the valves and in the combustion chambers and piston crowns. IMO, and YMMV, its snake oil, or more specifically an old mechanics tale
Yep, exactly right. Especially on a modern engine.
Road Warrior
Joined: Jul 2006
Posts: 1,302
Likes: 61
From: Near YVR
I have run mixed gas in my Ford in the past with no ill effects that I was aware of for the 10 years I owned the truck.
I doubt there is a measurable benefit in running a steady diet of 2 stroke oil in a 4 stroke engine.
But, if you do run Yama Lube R...it'll make your bike go faster cause of the r in the lube.
Rob
I doubt there is a measurable benefit in running a steady diet of 2 stroke oil in a 4 stroke engine.
But, if you do run Yama Lube R...it'll make your bike go faster cause of the r in the lube.
Rob
Outstanding HDF Member
Joined: Jan 2014
Posts: 2,181
Likes: 488
From: Central California
These days, there are a bunch of high quality fuel additives that do a much better job. Alky fueled vehicles need something. Currently I use Red Line additives in my methanol fueled drag car. However, gasoline fueled vehicles don't need anything, unless your motor was designed for leaded fuels and the valve seats are the parent iron in cast iron heads. Aluminum headed vehicles have hard valve seats. So nothing is needed, except for something like "Stabil" if the thing is gonna sit for awhile. And even then, only if ethanol laced fuels are used. That fuel has a tendency to leave a film in components if allowed to sit and dry out.
If you were using E85, it would be good the use a fuel additive for that.
Two stroke oil? I wouldn't use it. It'll make the motor smoke and as others have pointed out, leave carbon deposits. Your stock breather system puts enough oil into the fuel charge as it is.
Octane boosters for high compression motors can be helpful for motor with high enough compression to be on the edge of detonation, but really only serve to slow the rate of combustion. If you are running high enough compression that it pings or detonates on pump gas, then use gasoline (race gas) formulated for that. Personally, I wouldn't build a motor for a street bike with compression that high. You'd only be able to ride it as far as fuel was available. Plus, most race fuels are illegal to run on the street. Fuel taxes and all. The Man needs his cut. But, in all seriousness, you'd never get called out on it unless it had to be smog checked.
Last edited by Mike Lawless; Sep 22, 2018 at 09:51 AM.
Road Master
Joined: Apr 2016
Posts: 809
Likes: 362
From: NW Indiana
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Outstanding HDF Member
Joined: Sep 2017
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From: Great State of Texas
I think if it was called for and needed the owners manual / service manual would state:
"For better performance and cleaner burning add 2 cycle oil when filling fuel tank"
I think your biggest enemy at the pump is moisture. Especially if your bike sits up a lot. An ounce of SeaFoam here and there is a better choice.
I never have been a big fan of additives. The only one I can testify to is DieselKleen by Powerservice, for Diesel engines. Been using the stuff since 1997. I have over 1 million miles combined on two different 7.3 Powerstroke engines on original injectors.
"For better performance and cleaner burning add 2 cycle oil when filling fuel tank"
I think your biggest enemy at the pump is moisture. Especially if your bike sits up a lot. An ounce of SeaFoam here and there is a better choice.
I never have been a big fan of additives. The only one I can testify to is DieselKleen by Powerservice, for Diesel engines. Been using the stuff since 1997. I have over 1 million miles combined on two different 7.3 Powerstroke engines on original injectors.
Last edited by Cbyway; Sep 22, 2018 at 09:59 AM.
Seasoned HDF Member
Joined: Mar 2010
Posts: 38,608
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From: Honah Lee
Actually, the reverse is still true. FP got it from Facebook. It's the tin men who come up with the snake oil. Then they spread there is a problem. And the ignorant suckers jump on it. What's makes it worst is then they sell it and get nothing out of it.
Last edited by Jackie Paper; Sep 22, 2018 at 10:15 AM.