Avation gas is a different story, theres no ethinol or anything like that to break down in the gas. I work in an engine shop, antique cars, and put av gas in all my stuff thats going to sit over the winter because it doesnt break down or clog carbs. You should be more then fine. Thats just my 2cents. (i rebuild mechanical fuel pumps all day long, 90% of the time the ethanol in the gas is what causes them to fail or clogs carbs.)