Replaced by STP 78574

STP Octane Booster helps restore horsepower and acceleration by removing deposits and cleaning the fuel intake system. This two-in-one formula increases octane and cleans the fuel intake system to restore lost performance. Use it regularly when you fill up your tank to help reduce hits and pings. For more than 60 years, and for more miles than anyone can count, STP has been one of the most trusted names in auto care.