What is shelf life of gas?

Answer 1

It is hard to give a definite answer because it depends on how you store it. Assuming the gas was fresh when you bought it, you store it in a cool place, in a sealed container with the container full, and you use no fuel stabilizer, it will stay usable for about 2 months. If you add a fuel stabilizer it will stay usable for about 12 months. Do not use any fuel stored for over 12 months as it will contain some sludge which can clog injectors and carburetors.