Want to know how to store gas in case you need it in an emergency? After all, you have more important things to do than drive across town during a disaster, just to stand in line for gasoline. The more gas you store the better, but if you don’t treat it, will it go off and become useless. If the gasoline sits too long in the carburetor, it will turn to varnish and gum up. In other words, it will damage your engine, just when you need it most.
Use a Fuel Stabilizer. Stabilizers contain antioxidants and biocides to prevent compounds and microbial growth from forming on the gas.