Engineered with a special blend of high-performance detergents, power booster and friction modifier, STP® Ultra 5-in-1 is our most advanced formula. Designed to bring out the best in your car, STP® Ultra 5-in-1 helps restore the performance you once enjoyed. So if you would like to enhance your engine and give your car the ultimate clean up resulting in more miles to the gallon, STP® Ultra 5-in-1 is the perfect product for you and your vehicle.DIRECTIONSSimply add to your fuel tank every 4000 miles.IS IT SAFE TO USE IN MY VEHICLESTP® Ultra 5-in-1 Petrol System Cleaner is suitable for all classic/modern engines and catalytic converters.TAKE NOTE!Perfect for giving your fuel system the ultimate clean up with added protection and power booster.Saves fuelRestores power performanceReduces emissionsSmoother runningProtection of key engine parts from wear and corrosion
