Prevents harmful corrosion due to today’s Ethanol-blended and poor-quality gasoline. Not only does Injector Defender restore performance and protect fuel injection systems from performance-robbing deposits, it also provides fuel stabilization and preservation. This additive provides a pour-in solution that will not harm sensors in all fuel-injected cars, trucks, motorcycles and marine engines. Each 10-ounce bottle treats up to 25 gallons of gasoline.