10 Best Engine Cleaner Additives 2022

Gareth Otwell Reviewed by Gareth Otwell | Last Updated:

Liqui Moly 2037 Pro-Line Engine Flush – ⭐ Best Overall Engine Cleaner Additive

2037 by Liqui Moly

  • Release date: 08/11/2014
  • Weight: 1.05 pounds
  • Dimensions: 2.8 x 2.8 x 8 inches
Liqui Moly 2037 Pro-Line Engine Flush
  • Easy way to clean and flush the oil systems of gasoline and diesel engines
  • Gentle and rapid cleaning
  • Neutral to seals and other materials installed in the engine
  • Compatible with catalytic converters
  • Simple to use

Chevron Techron Concentrate Plus Fuel System Cleaner

65740 by Chevron

  • Release date: 09/08/2012
  • Weight: 1 pounds
  • Dimensions: 9.4 x 3.5 x 3.3 inches
  • Warranty: LIMITED WARRANTY
Chevron Techron Concentrate Plus Fuel System Cleaner
  • For best performance, follow the manufacturer's recommendations in your vehicle owner’s manual.

Sea Foam SF-16 Motor Treatment

SF-16 by Sea Foam

  • Release date: 12/27/2011
  • Weight: 0.5 pounds
  • Dimensions: 2.8 x 7.5 x 2.8 inches
Sea Foam SF-16 Motor Treatment
  • Cleans injectors, carb jets and passageways
  • Cleans and lubricates intake valves, pistons and cylinders
  • Dissolves and cleans fuel residue in fuel systems
  • Dissolves oil deposits in crankcase
  • Clean timing chain tensioners and VVT actuators, quiet noisy lifters
  • 100 percent pure petroleum
  • EPA registered product
  • Liquefies gum and varnish deposits or internal engine contaminants
  • Special Shipping Information: This item cannot be returned and has additional shipping restrictions
  • Special Shipping Information: This item cannot be returned and has additional shipping restrictions

Red Line (60103) Complete SI-1 Fuel System Cleaner

(60103) by Red Line

  • Release date: 04/12/2013
  • Weight: 1 pounds
  • Dimensions: 10 x 2.3 x 2 inches
  • Warranty: Manufacturer Warranty
Red Line (60103) Complete SI-1 Fuel System Cleaner
  • Designed to exceed expectations - Red line complete SI-1 fuel system cleaner treatment for cleaning & preventing corrosion in fuel systems
  • Perform & protect - Fuel additive cleans injectors, carburetors, valve & combustion chamber deposits with a powerful, concentrated blend of high-temp and low-temp detergents
  • Efficient fuel burn - Gas treatment that enhances gasoline stability, while reducing the build up of gum and varnish formation
  • Easy to use - Use one bottle per tank for most effective treatment, additive cleans nearly 100% efficiency in one treatment
  • Why red line - Established in 1979, red line products perform & protect better than any on the market. No compromises

Lucas 10003 Upper Cylinder Lubrication & Injector Cleaner 32 oz.

LUC10003 by LUCAS

  • Release date: 07/29/1999
  • Color: Tan
  • Weight: 1.98 pounds
  • Dimensions: 4 x 4 x 12 inches
  • Warranty: Manufacturer Warranty
Lucas 10003 Upper Cylinder Lubrication & Injector Cleaner 32 oz.
  • Lucas fuel treatment is formulated for both gasoline and diesel engines, carbureted or fuel injected
  • Use it to pass smog tests. Finally, it totally neutralizes the harmful effects of low sulfur diesel fuel.
  • Tan color
  • 1 Quart

Rislone 4102 Concentrated Engine Treatment – 💲 Best Budget Engine Cleaner Additive

4102 by Rislone

  • Release date: 07/16/2012
  • Color: Yellow
  • Dimensions: 1.9 x 3.4 x 7.6 inches
Rislone 4102 Concentrated Engine Treatment
  • Reduces friction and wear
  • Quiets noisy lifters and valves
  • Removes and prevents sludge
  • Add to engine oil anytime
  • Will not void manufacturer's new vehicle

Liqui Moly 2007 Jectron Gasoline Fuel Injection Cleaner

2007 by Liqui Moly

  • Release date: 05/09/2013
  • Weight: 0.5 pounds
  • Dimensions: 0 x 0 x 0 inches
Liqui Moly 2007 Jectron Gasoline Fuel Injection Cleaner
  • Eliminates starting problems, hesitation and stalling
  • Smoother idling
  • Better throttle response
  • Cleaner combustion

Mercury Marine Quickleen Engine and Fuel System Cleaner

8M0047931 by Mercury Marine Mercruiser

  • Dimensions: 10.9 x 8.3 x 8.5 inches
Mercury Marine Quickleen Engine and Fuel System Cleaner
  • Quickleen For use as needed throughout the boating season
  • Aggressive cleaners work to quickly and thoroughly remove carbon deposits from carburetors and injectors, intake valves, spark plugs, piston crowns, and cylinder heads
  • Prevents engine knocking and piston seize-up as well as Extends spark plug life
  • This product does not contain fuel stabilizers. Use with Quickare to prevent fuel breakdown and oxidation.
  • 1 ounce treats 5 gallons - 12 ounce bottle treats 60 gallons

104+ Injector Pro Complete Fuel System Cleaner Additive for GDI – 👑 Premium Pick

29214 by Unknown

  • Weight: 1 pounds
  • Dimensions: 6 x 6 x 2 inches
  • Warranty: 100% Satisfaction Guaranteed
104+ Injector Pro Complete Fuel System Cleaner Additive for GDI
  • Improve your Performance with just one Fuel Injector Pro by 104+ helps restore that lost engine power and performance you once remembered.
  • Advance fuel system cleaning technology – Formulated and designed to remove deposits from the entire fuel system including: GDI injectors, fuel lines, fuel filter and fuel pump.
  • Get Clean - Ideal formula that restores performance, increases power and torque, smoothest rough idling and reduces emissions.
  • How to Use - Use full bottle and fill fuel tank to full, run through (down to at least ¼ of a tank) and repeat process on next fill up.
  • Recommended two treatments back to back for optimal results. Treats up to 21 Gallon tank

STP Fuel Injector Cleaner

78577 by STP

  • Release date: 03/13/2012
  • Weight: 0.7 pounds
  • Dimensions: 1.5 x 4.6 x 7.9 inches
STP Fuel Injector Cleaner
  • Unclogs dirty fuel injectors to restore performance
  • Helps restore lost power and acceleration
  • Removes harmful deposits
  • Saves gas
  • Compatible with cap-less gas systems

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