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Royal Purple’s New Max-Boost is a high-performance octane booster with fuel treatment that increases gasoline octane, reduces emissions, and enhances engine performance while stabilizing fuel. Max-Boost is formulated with MMT, which delivers the best octane enhancement to help eliminate engine damaging detonation, pre-ignition, and pinging or knocking from low octane gasoline.

Max-Boost is formulated for 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, and alternate fuels like gasohol, reformulated gasoline, and all ethanol blends. Max-Boost is safe for oxygen sensors and catalytic converters.


Reduces engine knocking and pinging
Raises octane rating up to 30 points or 3 numbers
Restores power and fuel economy
Cleans deposits from fuel injectors
Reduces power loss due to knock-retard in computer controlled vehicles
Replaces lead additives for protection of non-hardened valve seats
Stabilizes fuel


One can treats up to 25 gallons of gasoline. Pour entire can into tank before fill-up. Clean immediately if spills occur, as product can permanently stain painted surfaces. Do not expose liquid to direct or indirect sunlight. Replace cap after can has been emptied, and dispose of properly.


Max-Boost is a racing formula and is not street legal. Please consult Royal Purple’s automotive technical support department for more information.