The Star brite 84300 PRO Star Gas Stabilizer w/Corrosion Inhibitors is a 1-gallon product that stabilizes gasoline and ethanol blends, providing fogging protection during storage for all gasoline engines. Its concentrated formula prevents gum and deposits, coats internal engine surfaces, and guards against rust in fuel systems and engine components. To use, add 1 fl. oz. per 5 gallons of fuel, fill the tank, and run the engine for 10 minutes. This product can expose you to chemicals known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.