Converts 92 Octane unleaded gasoline into 105 leaded racing gasoline. Increase horsepower and engine efficiency. Prevents damaging detonation and pre-ignition. Smoother engine torque curves for more usable power. Converts pump gasoline into High OctaneRacing Gasoline. Adds lubricity to dry unleaded gasoline. Allows higher compression ratios and advanced timing. Mix 1 gallon of HiTRATE to 9 gallons of 91+ octane unleaded pump gasoline.