2 Stroke oil and Ethanol blended gasoline.

[Schtoopid]

So, my little oil injector pump on my merc 40 isn't working. So I bypassed it, and mixed oil with fuel.

From what I read, regular 2 stroke oil doesn't play well with Ethanol blended gasoline, and I've heard many (snowmobile) horror stories about engines seizing up.
So, I'm using $20/l full synthetic 2 stroke oil.

Can I use "Synthetic blend" or "Semi-Synthetic" with the E10 fuel?

I understand that I can use plain ole 2 stroke oil with the injector pump, but I'm not using that..

 

[flyingscott]

I have no idea where you got that info but it is wrong any tcw-3 will mix fine with any E-10 fuel. It amazes me after 30 yrs of being out there E-10 is still blamed for everything.

 

[hemi rt]

I have no idea where you got that info but it is wrong any tcw-3 will mix fine with any E-10 fuel. It amazes me after 30 yrs of being out there E-10 is still blamed for everything.

Because people get Ethanol mixed up with Methanol, Methanol is hard on engines were as Ethanol will not harm an engine. One thing to remember is it takes more Ethanol to produce the same amount of power as straight gasoline. Also using fuel with ethanol in it will help eliminate any water in the fuel.

 

[82rude]

Its nothing short of amazing how old wives tales keep on living on.READ the first sticky on this page,excellent info.

 

[bruceb58]

There is one guy on here that shows corrosion on the outside of his engine and he blames that on ethanol!

Seriously, ethanol gets blamed for everything!

 

[GA_Boater]

There is one guy on here that shows corrosion on the outside of his engine and he blames that on ethanol!

Seriously, ethanol gets blamed for everything!

Causes hangovers too!

 

[flyingscott]

Because people get Ethanol mixed up with Methanol, Methanol is hard on engines were as Ethanol will not harm an engine. One thing to remember is it takes more Ethanol to produce the same amount of power as straight gasoline. Also using fuel with ethanol in it will help eliminate any water in the fuel.

The OP specifically asked about E-10 don't know he got mixed up with Methanol in this. My point was the problem with E-10 fuels are pretty much non-existant but the stygmas remains.

 

[Scott Danforth]

Causes hangovers too!

whiskey and bad choices.......

 

[RCO]

Ethanol really only causes issues with long term storage, or with rubber parts on old motors that weren't designed for it. If you run your motor on a regular basis, and run fuel stabilizer you aren't going to see any issues. Run whatever oil you prefer. BTW snowmobiles are a completely different animal than an outboard, and most issues you see with them are caused by somebody making changes that they don't really understand.

 

[Sea Rider]

Ethanol really only causes issues with long term storage, or with rubber parts on old motors that weren't designed for it.

That's not so, if you read modern OB's Owner's Manuals, Service Manuals will see that it's stated than when using E fuels rubber and plastic parts will detereorate faster than with non E fuels, among other issues..

Happy Boating

 

[bruceb58]

My 2006 Mercury service and owners manual says ethanol fuels up to 10% are fine to use. Maybe you can post a scan of the manual page you are referring to.

 

[jkust]

The only issue i've ever had relating to 2 strokes oil-wise is on my 2 stroke Arctic Cat fuel injected engine. I bought the cheapo off brand 2 stroke oil once to save money and the machine runs like crap while my carbed 2 stroke is indifferent no matter the oil I use. Both have oil injection. Don't know why but it will cough and get extremely poor mileage with the cheap oil. I though something else must be wrong but reverting back to a more expensive oil makes it run as it should. I now carry cheapo oil for the carbed and the better stuff for the EFI machine.

 

[82rude]

Nope. no mention of issues in my manual Sea Rider.e-10 is just fine according to mine.

 

[WIMUSKY]

Use premium gas, no ethanol. I use premium in all my toys. Not so so much of the ethanol part, just to maintain octane levels if they sit for a while. May be a waste of money, but I've done it for years. Aint changin' now.... BTW, I like snake oils as in Seafoam too......

 

[82rude]

WIMUSKY marketplace had a excellent peace on pre fuel..Your wasting your money unless your motor specifically requires premium.You actually lose hp ,mileage and put out more pollutants.But if you have been doing it this long I most likely wont change your mind but think of all the money you've wasted.Oh seafoam is not snake oil its the second coming!

 

[Schtoopid]

Wimusky - Why the hell would I use premium? its not knocking.

Re Ethanol and oil - "But how do we get two-stroke oil to dissolve in ethanol? It won?t. At least cheap petroleum oil won?t do it. But expensive synthetic oil will."
http://www.duckworksmagazine.com/06/columns/rob/maib2.htm
[h=3]"A high-quality fuel is important. Most stock machines call for a 91-octane non-ethanol fuel to maintain the integrity of that motor. "
http://snoriderswest.com/article/sled-tech/how_to_prevent_snowmobile_engine_failure[/h]
And the NMMA - [FONT=&quot]Nicole Vasilaros, the NMMA?s director of federal and legal affairs. ?Consumers remain at high risk. We have serious, well-documented and data-driven concerns with the safety of high ethanol fuel blends which have been proven to cause damage to marine engines.

So. As I understand, its the absorbtion of water in the ethanol blended fuel that refuses to allow the oil to blend.

I don't know how many of you are running pre-mixed fuel, and how many have to do that with ethanol blended fuels.
SOOOO. If you are, and if it works (pre-blended) then let me know.. I'll save myself some cash on the full-synthetic stuff. My experience is with snow-machines, and most of that is anecdotal.[/FONT]

 

[bruceb58]

Don't believe everything some clown from Wisconsin says!

 

[82rude]

The big part and critical is THE SAFTEY OF HIGH E FUEL BLENDS. No mfg of outboards are telling you its ok to use high e blends!They are telling you a low blend of e10 is ok.So from that one sentence I can guess some people are trying to use e15,e-20 or god forbid e-85 which no outboard mfg as of yet has said ok to.Ive used e-10 in my outboards booth premix and injected and never had a carb issue or anyother issue that could honestly put on e-10.Same with my sleds.

 

[Sea Rider]

Maybe you can post a scan of the manual page you are referring to.

It's posted on all Tohatsu HP models, assume than on all rebadged OB's Owner's Manual as well.

Happy Boating

 

[82rude]

No such warnig in my etec manual.2 contradicts 1 and 3 .And trust me a lawyer and jury would take note of 2 ,I would.