By the way, one of the little tidbits of knowledge that my uncle gave me about chainsaws was “use premium gasoline”. From his point of view, chainsaws filled with premium gasoline remain drastically cleaner and run much longer than the ones filled with normal gasoline. Apparently is has something to do with the gasoline-oil mixture of the two-stroke engines.

His advice has seemed to work well in my experience, as I’ve had a couple friends whose chainsaws were starting to sputter and spit, but ran like a dream after swapping out the gasoline for premium.