STP® Complete Fuel System Cleaner

Fuel cleaner. STP Complete Fuel System Cleaner bottle

Cleans and protects your entire fuel system from performance loss with just one treatment.

This STP® formulation contains the highest level of detergents of any STP® formula. It helps clean your entire fuel system to restore its optimum operating condition. The advanced formula helps clean fuel injectors, carburetors, intake valves and ports, combustion chambers, cylinder heads and piston tops. It contains jet fuel, a high-quality carrier of active ingredients.


  • Restore lost power and acceleration
  • Reduce hard starts and engine hesitation
  • Stop knock and ping

Usage Frequency

Use every oil change or 4,000 miles.

Treat Rate

  • 5.25 oz. bottle treats 21 gallons
  • 12 oz. bottle treats 28 gallons

Take Note!

STP® Complete Fuel System Cleaner is safe for all gasoline engines.

Not sure which Fuel Additive to use?

Click here to view our comparison chart