Rockrider,I should have put in my post that I agree with your response, especially operating snowmobiles under those conditions. When I lived in Penna. years ago my family had sleds and we added drygas almost religiously. My previous reply was from a" bike"point of view, and if you read it again I said that if a significant amount of water mixes with the drygas it COULD cause aproblem,not definately cause a problem. I think it was Eric Gorr who had an article in DIRTRIDER mag a couple of years back talking about the very same thing I stated, except it was refering more to a problem running gasahol not drygas. My only concern was trying to warn FLBOB about the problems he could encounter and giving him some info so he can make an "educated" decision. Maybe somebody out there can give some more input on a gas additive that can take care of water but is more 2 cycle friendly than most drygas type additives, which are formulated for cars. Doug