Many of the problems blamed on Gasahol were doe to using it in older engines that were designed for pure gasoline. The running of the mechanical parts wa not a problem, but many of the fuel system gaskets, o-rings, and such were damaged or dissolved by the alcohol. In newer products, most of these problems have been resolved by using alcohol resistant materials. I did have a non-repairable problem with a small engine when the fuel pickup hose melted and clogged the carburetor. It was cheaper to get a new one than to repair the old. Just in case though, I use straight gasoline in all my small engines.