STP Gasoline Octane Booster 5.25 oz

The STP octane booster boosts octane and helps stop knock and ping, restores horsepower, cleans the fuel intake system, prevents hard starting and stops engine run-on. Keep your engine safe from surprises and enjoy smooth performance with high quality fuel additives by STP. Designed by one of the most reputable manufacturers on the market, STP fuel additives effectively clean the fuel intake system and help restore the lost performance or maintain the optimum performance of your vehicle with regular fills.