I found that race fuel works good in my chainsaws and weed eaters. They use very little so the cost isn't really a factor. Don't have to worry about stale gas or ethanol messing them up if they set unused for awhile. I always have race fuel around for my racecar and the dyno so it is convenient for me. I also have customers that buy race fuel And use it in place of a fuel stabilizer for things that are stored over the winter of summer.