My $0.02 again: Go ethanol-free fwiw. Use mid-grade or better yet premium e-free for your 2 stroke equipment. Personally, I like playing Witch Doctor and using Seafoam in any of my equipment's fuel on an occasional basis and for Winterization purposes. BUT, for me at least, I determined that Startron is best used in 4-stroke fuel/equipment...and NOT in 2-stroke fuel/equipment. JMO.