What's the best 2-stroke oil?

I called motul a few days back and asked what temperaturethe 800 off road is able to be used at and -54°F was when it will separate.

 

I just use regular gas with methanol in it. I have never had a problem with any of my small engines or chainsaws. I mix Stihl Synthetic 2 stoke in my saws. Leaving fuel in the carbs for long periods is where most problems are. Modified engines may require higher octane or special treatment, that's why I leave my stuff bone stock for reliability.

 

Sad to say I never drain saws or dump 36 month old fuel. One year fuel probably yes. I dont have problems that I associate to these practices. That said I usually use like 92/93 or recently 87 octane and good oil all fuel is NO E gas unless I forget and buy ethanol and then I use it all up quick and dump the rest.

 

Methinks you mean ethanol. Methanol will eat aluminum for breakfast. Bad for aluminum engine chainsaws. Veddy bad. If you leave fuel in saws for longer periods of time, just use a good fuel stabilizer. Problem with leaving ethanol mix in anything over time is that it will absorb water, and the gas will go bad, even with stabilizer in it.

 

I noticed the me than Al too and assumed he meant Ethonol

 

oops typo ^^^

 

Many say that Lucus is good I didnt get any cause it was smi syn. I also got amsoil delivered to my door for about the same price.

 

I have been running dominant or. Like the red color.

I just read on some dirt bike forums that many have rusty pasty bearings! I guess from sitting. Not sure their mix ratios though some said it was a big problem in out boards they read too.

After that and the fact some of my saws sit awhile I may switch to another am soil or k2 or some thing

 

Many say that, cause they are right.

 

X2 !

 

I can get 110 and 112 octanes where I live anytime or the 87-93 non-E too in NW Louisiana

 

I tried 100+ octane a few years ago in high comp ported saws and it actually slow em down a little. I've run 91 E-free and Lucas oil since.

 

I've only tested a high octane in my 212psi 660 once. I did several cuts with 93 and then 110 tuned to 4-stroking. It was about a 25" piece of very dry wood - water oak. The 110 cut an average of 11.6% faster. I've wanted to test again but haven't.

 

Here's a dyno test Chad did on my ported 660 using his 92 octane and my 110. The 110 showed a slight HP advantage at 10500 and 11500. But the majority showed the 92 was better throughout most of the rpm range.

 

I've seen the chart and was a bit surprise at the time. Not much difference...
I guess it might also depend on the saws?

 

I was thinking of that chart when he put that post up. Almost mentioned it.

 

For sure it would matter every ported saw can't be the same.

 

I have a compression ratio chart showing recommended octanes for known compression ratios. I've calculated different octane recommendations, at my altitude, for different saw compressions. I'll probably start a thread when I get a chance after I do some testing with several saws. So far, I've concluded 110 octane isn't beneficial unless your saw is pushing over 200 psi. I've only conducted one test to prove this.....more tests are needed. I've also calculated the best octanes from compressions ranging from 150 - 220psi. I might be right or completely wrong. More testing will prove or disprove it.

 

Be interesting to see your info on this. Most of my saws are around 190 psi, with one at 200, but they are smaller high rpm saws.