The Star brite 14816 is a 16 oz fuel stabilizer and corrosion protector designed for all gas engines, including motorcycles, boats, lawn equipment, and classic cars. It keeps fuel fresh for up to two years and protects internal metal surfaces from rust. The formula uses enzymes to stabilize fuel, breaking down contaminants, and includes corrosion inhibitors to prevent internal rust. One ounce treats 5 gallons of fuel and it is suitable for all ethanol blends and non-ethanol gasoline, but not recommended for diesel fuel. 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.