The STA-BIL 360 Protection Ethanol Treatment & Fuel Stabilizer is a 10 fluid ounce fuel additive designed to protect fuel systems and stabilize gasoline for up to 6 months. Made by STA-BIL in the United States, this product ensures that fuel remains fresh and ready to use, whether the vehicle is being driven daily or stored for extended periods of time. With its pack of 1 unit, this fuel stabilizer is a convenient and effective solution to keep your vehicle's engine running smoothly and efficiently.