Does gas have an expiration date?
In general, gasoline should be used within a month of purchase. When the engine will not be used for an extended period of time, it’s best to drain the fuel tank and then run the engine until it stalls. If you choose to store gasoline, keep it in a very nearly full, tightly sealed metal container in a cool environment. Be sure to leave some room in the container to allow for some expansion. Under these conditions, the gasoline can be expected to remain of good quality for at least six months.
