Best Oil Additive To Clean Engine: image
Best Overall

That extends engine life and reduces oil consumption. The product is formulated to prevent dry starts and excessive wear on the engine. It also helps in reducing friction, which can lead to overheating of the engine. Lucas Oil Stabilizer has been approved by the National Institute of Petroleum Engineers (NIOPE) for use in diesel engines. Notably, it was approved by the NIOPE in 2015.

Best Price

Prolong Engine Treatment, which is formulated with Anti-Friction Metal Treatment (AFMT) technology, has been developed to reduce friction and heat in the engine. The formula contains no solid particles and acts as a protective layer on the metal surfaces. It also helps to prevent oil loss due to high temperature conditions. Notably, the product was launched in 2015 under the brand name ‘Prolong’. The company claims that its products are environmentally friendly.

Honorable Mention

CERA TEC is a high-tech ceramic wear protection product for all motor oils. The product has a low friction coefficient and can be mixed with any oil to provide maximum wear protection. It also reduces friction due to the presence of carbon monoxide in the oil. Not suitable for use with wet clutches. No additives are added to the oil, making it self-mixable.

Best Oil Additive To Clean Engine

Top 10 Best Oil Additive To Clean Engine

1
Why we chose it
  • Fixes 6.0L and 7.3L Power Stroke cold start injector problems
  • Reduces engine noise, vibration and heat
  • For all diesel and gasoline engines, gearboxes, hydraulics, differentials and power steering systems
  • Reduces wear and extends component life
  • 16oz AR9100 Friction Modifier – treats one Power Stroke
Archoil AR9100 Oil Additive (16oz) for All Vehicles - Powerstroke Cold Starts, Eliminates Injector Problems: image
94%
customers recommend this product
4.7/ 5
Longevity4.8
Easy to use4.5
Mileage4.4
Value for money4.3
Top Pick
2

Lucas Oil 10001 Heavy Duty Oil Stabilizer – 1 Quart

5,599 ratings | 55 offers | 5,599 Reviews
Price: $10.62$43.23
Why we chose it
  • Lowers engine temperature
  • Virtually eliminates dry starts and excessive wear
  • Raises Oil Pressure
  • For use in any engine, gasoline or diesel
  • Extends oil and engine life
  • Will not sludge or varnish
Lucas Oil 10001 Heavy Duty Oil Stabilizer - 1 Quart: image
96%
customers recommend this product
4.8/ 5
Longevity4.9
Value for money4.8
Mileage4.7
3

Marvel MM13R Mystery Oil – 32 oz.

2,183 ratings | 18 offers | 2,183 Reviews
Price: $8.49$27.97
Why we chose it
  • For best performance, follow the manufacturer’s recommendations in your vehicle owner s manual.
Marvel MM13R Mystery Oil - 32 oz.: image
94%
customers recommend this product
4.7/ 5
Mileage4.6
Value for money4.4
4
Why we chose it
  • Offers Molecules that Interact with Metal Surfaces and Chemically Bond to Create a Protective Layer that Reduces Damaging Friction and Heat
  • Features Engineering Designed to Treat Metal Surfaces of Both Gasoline and Diesel Fueled Engines
  • Includes a Formula with Anti-Friction Metal Treatment Technology
  • Offers to Protect the Engine Even when the Motor Oil is Not Yet Fully Circulating
  • Features a Formula Containing No Solid Particles Such as PTFE Resins, ‘Molys’, Zinc, Copper, or Graphite
Prolong Super Lubricants PSL11202 Engine Treatment - 1 Gallon , BLUE: image
96%
customers recommend this product
4.8/ 5
Longevity4.9
Mileage4.8
Value for money4.7
5

REV X Stiction Fix Oil Treatment – Two 4 fl. oz. Bottles

1,854 ratings | 1 offers | 1,854 Reviews
Price starts from: $65.95
Why we chose it
  • Greatly improves or eliminates cold start issues in all diesel engines.
  • Removes stiction, common in HEUI Injectors, without using harmful and dangerous chemical strippers.
  • Extends the service life of all synthetic, semi-synthetic, and mineral based oils providing a reduction of wear of all treated engine components.
  • Two 4 fl. oz. bottles of REV X High Performance Oil Additive in our stiction fix retail box. Will treat up to 12 quarts of oil.
  • Quiets engine noise while cleaning harmful deposits, varnish and sludge in all engines. Reduces friction by creating a microscopic friction reduction layer on all treated components to reach areas standard oils can not.
REV X Stiction Fix Oil Treatment - Two 4 fl. oz. Bottles: image
94%
customers recommend this product
4.7/ 5
Easy to use5
Mileage4.5
Value for money4.1
6

Liqui Moly (20002) Cera Tec Friction Modifier – 300 ml

10,709 ratings | 36 offers | 10,709 Reviews
Price: $17$45.23
Why we chose it
  • Stable even under high thermal and dynamic permanent loads
  • No deposits and absolutely compatible with all commonly used filter systems
  • Mixable with all commercially available motor oils
  • Resists extremely high and low temperatures
Liqui Moly (20002) Cera Tec Friction Modifier - 300 ml: image
94%
customers recommend this product
4.7/ 5
Longevity4.6
Value for money4.5
Noise level4.5
Mileage4.5
7
Why we chose it
  • Restores horsepower
  • Restores cylinder compression
  • Restores engine performance
  • Reduces oil consumption
Restore (00012 6-Cylinder Formula Engine Restorer & Lubricant - 12.5 oz.: image
94%
customers recommend this product
4.7/ 5
8

Bar’s Leaks High Mileage Engine Repair, 16.9 oz

1,153 ratings | 21 offers | 1,153 Reviews
Price: $10.97$29.18
Why we chose it
  • Quiets Noise
  • Helps Clean Internal Parts
  • Reduces Friction
  • Increases Oil Pressure
Bar's Leaks High Mileage Engine Repair, 16.9 oz: image
86%
customers recommend this product
4.3/ 5
Mileage3.6
Value for money3.6
9
Why we chose it
  • ELIMINATES WATER This fuel injector cleaner helps to remove water that may get into your fuel system. Penetrating deep into the fuel line, this simple fuel additive prevents the need to disassemble the engine. The 8 oz. bottle of this alcohol-free fuel additive treats up to 20 gallons of fuel.
  • FIXES ROUGH RUNNING ENGINES STA-BIL Fast Fix eats away at gum and varnish that cause rough starts and no starts in your small engine equipment. This easy-to-use fuel additive combats the effects of ethanol blended gasoline.
  • DIRECTIONS For rough running engines use 1 oz. of STA-BIL Fast Fix per 2.5 gallons of fuel. Fill with fresh gas. Start the engine and allow to run for 15 minutes to allow the additive to work its way through the fuel system. If the engine does not start, attempt to turn it over a few times so the additive makes its way through the fuel system and allow to sit overnight. Attempt to start again, if problems persist you may need to have it looked at by a mechanic.
  • SHELF LIFE All STA-BIL branded products are good for use up to 2 years after the bottle was opened. Be sure to mark the date you opened the bottle on the back of your package! Proudly made in the USA by a family-owned company in Chicago, Illinois.
  • VERSATILE Compatible with all small engines, adding STA-BIL Fast Fix to your 2-cycle or 4-cycle small engine cleans carburetors and injectors while acting as a water remover. Use this product in your lawn mower, chainsaw, trimmer, snow blower, generator, and more.
STA-BIL Fast Fix - Small Engine Treatment, Cleans Carburetors and Injectors, Fixes Rough Running Engines, Eliminates Water, Treats Up to 20 Gallons, 8oz (22304): image
90%
customers recommend this product
4.5/ 5
Sheerness4.8
Easy to use4.7
Value for money4.5
Mileage4.2
10
Why we chose it
  • Patented all-natural metal cleaner designed to thoroughly clean the internals of your engine. Use 2 Bottles for Engine Sludge.
  • Compatible with all engine oils, conventional or synthetic.
  • Can also be used in transmissions, differentials, and power steering units.
  • Has been shown to reduce wear and provides a lower coefficient of friction when compared to motor oil alone.
Auto-RX Plus is an All-Natural Metal Cleaner for Transmissions, Engines, Differentials and Power Steering. Designed to Thoroughly Clean The Internal Components. (AutoRx Amazon): image
84%
customers recommend this product
4.2/ 5
Top Pick
Lucas Oil 10001 Heavy Duty Oil Stabilizer - 1 Quart
Lucas Oil Stabilizer is a 100% petroleum product formulated to eliminate dry starts and reduce friction, heat and wear in any type of engine. It allows motor oils a higher degree of lubricity which reduces oil consumption and operating temperatures.
Ranking the Brands
Archoil: 10.00%
Lucas Oil: 10.00%
Marvel Mystery Oil: 10.00%
Prolong Super Lubricants: 10.00%
REV X: 10.00%
Liqui Moly: 10.00%
Restore: 10.00%
Bar’s Leaks: 10.00%
STA-BIL: 10.00%
Auto-RX: 10.00%

Comparison Table

Сomparison: Archoil AR9100 Oil Additive (16oz) for All Vehicles - Powerstroke Cold Starts, Eliminates Injector Problems: imageСomparison: Lucas Oil 10001 Heavy Duty Oil Stabilizer - 1 Quart: imageСomparison: Marvel MM13R Mystery Oil - 32 oz.: imageСomparison: Prolong Super Lubricants PSL11202 Engine Treatment - 1 Gallon , BLUE: imageСomparison: REV X Stiction Fix Oil Treatment - Two 4 fl. oz. Bottles: imageСomparison: Liqui Moly (20002) Cera Tec Friction Modifier - 300 ml: imageСomparison: Restore (00012 6-Cylinder Formula Engine Restorer & Lubricant - 12.5 oz.: imageСomparison: Bar's Leaks High Mileage Engine Repair, 16.9 oz: imageСomparison: STA-BIL Fast Fix - Small Engine Treatment, Cleans Carburetors and Injectors, Fixes Rough Running Engines, Eliminates Water, Treats Up to 20 Gallons, 8oz (22304): imageСomparison: Auto-RX Plus is an All-Natural Metal Cleaner for Transmissions, Engines, Differentials and Power Steering. Designed to Thoroughly Clean The Internal Components. (AutoRx Amazon): image
Archoil AR9100 Oil Additive (16oz) for All Vehicles – Powerstroke Cold Starts, Eliminates Injector ProblemsLucas Oil 10001 Heavy Duty Oil Stabilizer – 1 QuartMarvel MM13R Mystery Oil – 32 oz.Prolong Super Lubricants PSL11202 Engine Treatment – 1 Gallon , BLUEREV X Stiction Fix Oil Treatment – Two 4 fl. oz. BottlesLiqui Moly (20002) Cera Tec Friction Modifier – 300 mlRestore (00012 6-Cylinder Formula Engine Restorer & Lubricant – 12.5 oz.Bar’s Leaks High Mileage Engine Repair, 16.9 ozSTA-BIL Fast Fix – Small Engine Treatment, Cleans Carburetors and Injectors, Fixes Rough Running Engines, Eliminates Water, Treats Up to 20 Gallons, 8oz (22304)Auto-RX Plus is an All-Natural Metal Cleaner for Transmissions, Engines, Differentials and Power Steering. Designed to Thoroughly Clean The Internal Components. (AutoRx Amazon)
ManufacturerArchoilLUCAS OILMarvel Mystery OilProlong Super LubricantsRev X Products, Inc.Liqui MolyRestoreBar’s LeaksGold Eagle Co.Auto-RX
BrandArchoilLucas OilMarvel Mystery OilProlong Super LubricantsREV XLiqui MolyRestoreBar’s LeaksSTA-BILAuto-RX
Item Weight1 pounds2.03 pounds1.96 pounds9.45 pounds8 ounces10.6 ounces14.4 ounces1.05 pounds7.4 ounces13.1 ounces
Product Dimensions10 x 10 x 10 inches10.12 x 3.14 x 2.67 inches2.25 x 4.5 x 10.25 inches10.5 x 6.4 x 5 inches3.5 x 2 x 3.75 inches2.5 x 1 x 3 inches2.76 x 2.76 x 7.76 inches7.41 x 2.85 x 1.35 inches
Is Discontinued By ManufacturerNoNoNoNoNoNo
SizeQuart32 oz.1 Gallon2 Pack1 Pack8 fl oz

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