Product Description Royal Purple s new Max-Boost 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. Formulated with MMT Max-Boost delivers the best octane enhancement to help eliminate engine-damaging detonation pre-ignition and pinging or knocking from low-octane gasoline. Max-Boost is the best fuel system stabilizer for anyone looking to significantly boost engine performance and efficiency.