Our most advanced formula with STP® Wearguard

Restore performance

Reduce friction

Inhibit corrosion

Power booster

Prevent hard starts and engine hesitation

Reduces knocking and pinging

Save fuel

Reduce emissions

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.

Simply add to your fuel tank every 4000 miles.

STP® Ultra 5-in-1 Petrol System Cleaner is suitable for all classic/modern engines and catalytic converters.

Perfect for giving your fuel system the ultimate clean up with added protection and power booster.

STP Ultra 5-in-1 Petrol System Cleaner is engineered with a special blend of high-performance detergents to help clean your fuel delivery system, corrosion inhibitors to protect it and power boosters to give your vehicle extra ‘oomph’. Once added to your fuel delivery system it works its way through, removing built up deposits. STP® Wearguard coats cylinder walls reducing friction to ensure the engine runs as efficiently as possible.

STP® Wearguard is designed to protect key engine parts by coating the upper cylinder wall to help reduce friction and ensure the engine is running as efficiently as possible.