With all the worry over alcohol in our gas that we use for chainsaws got me to thinking of a source that is alcohol free. I know of a few people that run Aviation fuel in their old hot rods since it is higher octane than what one can buy at a station. I'm pretty sure it is alcohol free as well. My question is the higher octane a bad thing for our chainsaws or not? I can drive to our local airport in ten minutes, but it is a hour and a half drive to the closest station that has alcohol free gas. Price isn't really a big problem with chainsaw gas since most of us only use a small amount over a years time. Jack