Liquid Performance Premium Octane Boost Race Fuel Concentrate is a high performance octane booster and fuel treatment for racing applications that increases gasoline octane, reduces emissions, and enhances engine performance while stabilizing fuel. Delivers the best octane enhancement to help eliminate engine-damaging detonation, pre-ignition, and pinging or knocking from low-octane gasoline. Liquid Performance Premium Octane Boost Race Fuel Concentrate is formulated for racing engines equipped with carburetors, port fuel injection and direct injection, as well as turbocharged, supercharged and nitrous- injected engines. Safe for use in leaded and unleaded gasoline, as well as alternate fuels like gasohol, reformulated gasoline, and all ethanol blends. Safe for oxygen sensors and catalytic converters.