Best Oil Additive To Clean Engine: image

Best Overall

Lucas Oil 10001 Heavy Duty Oil Stabilizer - 1 Quart

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.

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Prolong Super Lubricants PSL11202 Engine Treatment - 1 Gallon , BLUE

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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

Liqui Moly

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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

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

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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

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

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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

Why we chose it

For best performance, follow the manufacturer’s recommendations in your vehicle owner s manual.

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Marvel MM13R Mystery Oil - 32 oz.: image

94%

customers recommend this product

4.7/ 5

Mileage4.6
Value for money4.4

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

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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

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.

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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

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

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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

Why we chose it

Restores horsepower
Restores cylinder compression
Restores engine performance
Reduces oil consumption

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Restore (00012 6-Cylinder Formula Engine Restorer & Lubricant - 12.5 oz.: image

94%

customers recommend this product

4.7/ 5

Why we chose it

Quiets Noise
Helps Clean Internal Parts
Reduces Friction
Increases Oil Pressure

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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

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.

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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

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.

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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

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


	Archoil AR9100 Oil Additive (16oz) for All Vehicles – Powerstroke Cold Starts, Eliminates Injector Problems	Lucas Oil 10001 Heavy Duty Oil Stabilizer – 1 Quart	Marvel MM13R Mystery Oil – 32 oz.	Prolong Super Lubricants PSL11202 Engine Treatment – 1 Gallon , BLUE	REV X Stiction Fix Oil Treatment – Two 4 fl. oz. Bottles	Liqui Moly (20002) Cera Tec Friction Modifier – 300 ml	Restore (00012 6-Cylinder Formula Engine Restorer & Lubricant – 12.5 oz.	Bar’s Leaks High Mileage Engine Repair, 16.9 oz	STA-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)
Manufacturer	Archoil	LUCAS OIL	Marvel Mystery Oil	Prolong Super Lubricants	Rev X Products, Inc.	Liqui Moly	Restore	Bar’s Leaks	Gold Eagle Co.	Auto-RX
Brand	Archoil	Lucas Oil	Marvel Mystery Oil	Prolong Super Lubricants	REV X	Liqui Moly	Restore	Bar’s Leaks	STA-BIL	Auto-RX
Item Weight	1 pounds	2.03 pounds	1.96 pounds	9.45 pounds	8 ounces	10.6 ounces	14.4 ounces	1.05 pounds	7.4 ounces	13.1 ounces
Product Dimensions	10 x 10 x 10 inches	10.12 x 3.14 x 2.67 inches	2.25 x 4.5 x 10.25 inches	10.5 x 6.4 x 5 inches	3.5 x 2 x 3.75 inches	2.5 x 1 x 3 inches	2.76 x 2.76 x 7.76 inches	7.41 x 2.85 x 1.35 inches	–	–
Is Discontinued By Manufacturer	No	No	No	–	No	No	No	–	–	–
Size	–	Quart	32 oz.	1 Gallon	2 Pack	–	–	1 Pack	8 fl oz	–