STA-Bil keeps fuel fresh for quick, easy starts after storage. This top selling fuel stabilizer removes water to prevent corrosion and cleans carburetors and fuel injectors. STA-BIL prolongs engine life by protecting it from gum, varnish, rust, and corrosion. STA-BIL eliminates the need to drain fuel before storage. For all 2-cycle and 4-cycle gasoline and diesel engines. This 32-oz. bottle treats up to 80 gallons. Shipped ground only.