104+ Octane Boost Gold Eagle 104+ is the original octane booster since 1975. 104+ Octane Boost improves power acceleration and gas mileage. 104+ also cleans fuel injectors and the complete fuel system. 104 is safe for all catalytic converters and oxygen sensors. (104 is intended for off road use only) Add entire contents of bottle to gas tank and fill with fuel. One bottle treats up to 18 gallons. Safe to use in all gasoline blends including Ethanol. Headquartered in the heart of Chicago s industrial hub Gold Eagle Co. is a privately held company founded in 1932 by Armin Hirsch. For more than 75 years Gold Eagle has been an industry pioneer in the production and distribution of aftermarket fluids and additives as well as an innovator and leader in the product development manufacturing marketing and distribution of branded engine performance and maintenance chemicals. The Retail and Installer Brands Group within Gold Eagle Co. markets and sells more than 100 branded products while its Private Brands Group supplies over 400 different OEM and private branded products into the majority of the top engine-related original equipment manufacturers and retail marketers. Product Benefits Boosts Power! Get Better Gas Mileage Cleans Fuel Injectors Reduces Knocks Pings & Hesitation Safe for Catalytic Converters & Oxygen Sensors Treats up to 18 gallons Boosts Power! Get Better Gas Mileage Cleans Fuel Injectors Reduces Knocks Pings & Hesitation Safe for Catalytic Converters & Oxygen Sensors Treats up to 18 gallons