Hey guys i currently run 93 octane E gas with hp ultra..i can only get 87 non E gas in my parts..question is would i notice any difference if i switched to the non E 87?
I've seen a lot of chatter about this on other sites. I'm not stating anything as fact from my mouth, but what I've read says there is no need to run high octane in our 2-stroke equipment. Besides, I'd take any octane EF gas over the 'contaminated' stuff!
I'd much rather run 87 non-E than anything with ethanol in it. I run 91 non-E now because that's all I can get here, but would rather have 87-89.
I'm going to start buying racing fuel (I think it's non-E, 112 octane leaded) in 10 gallon increments........my cousin drag races and can get me a decent deal on it. As of right now I've been using 93 octane E-gas as that's almost all that's available to me in my area, I mix it a little either with my oil though (around 40:1 mix). I've never had any problems as of yet and I've gone through around 40 gallons of gas since last January on my saws alone. There is a local Stihl dealer who sells AvGas for something g like 9 bucks a gallon, I'm just not that crazy about dealing with the guy.....
It probably wont hurt anything, but I would not run anything close to 100 octane. In theory is should make less power than 87-93 octane... Some racing fuels have ethanol...
I do the same. All my 2 strokes get 93 octane shell v power. I've heard that stuff is e free, but I doubt it. Anyways, all my equipment has been fine for the few years I've been using that gas now. Even after I forgot to run them dry last winter
This was a dyno test, by Chad, showing 92 non-E vs 110 Sunoco racing fuel in my ported 660. My saw is over 200 psi and the dyno didn't show an increase in HP with the 110. The limited amount of cutting I've done with 93 vs 110 the 110 octane was slightly faster by about 10%. But I think the dyno graph speaks for itself. The fuel mix was a 32:1 ratio.
