Re: How long does gasoline last in a plastic gas can?
Hi, James. Gas actually starts breaking down(oxidizing)right away. But depending on how long, where and the weather conditions during storage it should be alright for 2-3 months, maybe a little longer. I don't know what kind of oil you have mixed with it, which may or may not make a difference.
Most racers use only fresh mix every time, but I don't think it's necessary.
Just as a note, I have used Stabil fuel stabilizer in all sorts of engines for years, and firmly believe in it. On my back-up generator, I can leave it for 6 months with the same fuel in it and it starts on 2 or 3 pulls and has never had corrosion or gunk in the tank or carb. I hope this helps, Bob