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Fuel System Cleaners

49 fuel system cleaners from Gumout, Red Line, STP and more.

Recommended Fuel System Cleaners

Liqui Moly
+Complete gasoline system cleaning for fuel systems
+500 ml bottle size
+Truck series formula for heavier vehicles
No price recorded yet.
Lucas Oil

1-Pack, 16 oz

+Designed to help enhance engine performance
+Designed to help keep the emissions system clean
+16 oz bottle size
No price recorded yet.
Molecure

12 oz

+Cleans fuel injectors and complete fuel system
+Targets intake valve and combustion chamber carbon
+12 oz bottle treats up to 20 gallons
No price recorded yet.
Motor Purr
+Holds 7.5 fl oz of fuel injector cleaner
+Works in both gas and diesel fuel systems
+Name identifies it as a fuel injector cleaner
No price recorded yet.
STP

12-Pack

+Treats 21 gallons of fuel per bottle
+Sold as a 12-pack of 5.25 fluid ounce bottles
+Designed to remove water from fuel
No price recorded yet.
STP

12-Pack

+Sold as a 12-count pack
+Listed for high mileage engines
+Includes upper cylinder lubricant
No price recorded yet.
Valvoline

12 oz

+Holds 12 oz of fuel system cleaner
+Cleans fuel systems while helping improve performance
+Helps improve fuel economy
No price recorded yet.
Valvoline

12 oz

+Holds 12 oz of fuel system cleaner
+Cleans fuel systems while helping restore performance
+Helps restore fuel economy
No price recorded yet.

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Spec scores, pros and cons, and prices are explained in the How it works section of the About page.