A genuine performance enhancer with an octane booster (upgrades 87 to 90) plus the upper cylinder and fuel system lubrication Lucas is famous for. This product ensures easier piston travel, valve seat protection, maximum life from pumps, injectors, and carburetors, eliminates spark knocks, pinging, and dieseling, increases mpg and reduces emissions by promoting clean fuel burning. Octane booster is safe for turbos, oxygen sensors, and catalytic converters. This product is for use in any gasoline engine that is fuel injected, carbureted, a throttle body, or a rotary engine. Pour the entire bottle into your tank and then fill up with any grade of gasoline; treats up to 25 gallons of leaded or unleaded gasoline.