Best Oil Additive: image
Best Overall

. The 16oz AR9100 Friction Modifier treats one Power Stroke engine, reduces engine noise, vibration and heat. It also extends the component life by reducing wear on gearboxes, hydraulics, differentials and power steering systems. This product has been tested to ensure that it does not cause any damage to the engine. Notably, this is the first time an AR9100 has been used in a diesel engine.

Value for Money

HEUI Injectors has created a microscopic friction reduction layer on all engine parts to reach areas standard oils cannot reach. The additive is used in the production of diesel engines and can be used for up to 12 quarts of oil. It reduces friction by using water-soluble polymers, which are less harmful than conventional oils. Notably, this product was introduced in 2015 as part of a major overhaul of our diesel engines.

Most Discussed

Kit from Marvel Mystery Oil. The kit contains two 16-ounce bottles of Marvel Mystery Oil, which helps prevent oil breakdown caused by extreme temperatures. It also protects the engine from damage caused by high temperatures. Notably, this is the first time an oil enhancer has been used in a diesel engine. The kits are sold at a cost of?1,000 to?2,000 per litre. They contain no harmful chemicals or additives.

Best Oil Additive

Top 9 Best Oil Additive

Top Pick
1
Why we chose it
  • Reduces engine noise, vibration and heat
  • 16oz AR9100 Friction Modifier – treats one Power Stroke
  • For all diesel and gasoline engines, gearboxes, hydraulics, differentials and power steering systems
  • Fixes 6.0L and 7.3L Power Stroke cold start injector problems
  • Reduces wear and extends component life
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
2

COMP Cams 159 Engine Break-In Oil Additive, 12 oz. Bottle

308 ratings | 31 offers | 308 Reviews
Price: $13.46$34.75
Why we chose it
  • Proprietary additive package includes optimum amounts of ZDDP (Zinc and Phosphorus),Molybdenum and detergents
  • Requires no additives or supplements for maximum protection
  • Improves surface mating of rotating assembly, rod journals, piston rings, valve guides, cam and lifters, etc.
  • Fully compatible with gasoline, methanol and high octane race fuel
  • Protects all internal engine components, including flat tappet and roller valve trains
COMP Cams 159 Engine Break-In Oil Additive, 12 oz. Bottle: image
96%
customers recommend this product
4.8/ 5
3
Why we chose it
  • Engine oil additive restores the surfaces of the engine parts and compensates for the resulting wear
  • Provides active protection against overload and overheating Extends lifespan
  • Restoration of engine compression Repair of the surfaces
  • Motor oil additive with Revitalizant Engine oil additive Suitable for gasoline and gasoline engines
  • Lowers fuel consumption effectively protects the engine against wear Atomic metal conditioner
XADO Engine Oil additive - Protection for Engines - additive for wear Protection & rebuilding of Worn Metal Surfaces - Metal Conditioner with Revitalizant 1Stage Maximum (up to 5qt of Oil Capacity): image
90%
customers recommend this product
4.5/ 5
Mileage4.4
Value for money4.2
Longevity4
4

ZDDPPlus ZDDP Engine Oil Additive Zinc & Phosphorus 2 Bottles

256 ratings | 3 offers | 256 Reviews
Price: $25.64$26.79
Why we chose it
  • PREVENT METAL ON METAL CONTACT – ZDDPlus alters characteristics to prevent metal on metal contact
  • PROTECT YOUR ENGINE – Older cars with flat tapped lifters-cam need the added zinc for protection
  • COMPATIBLE WITH SYNTHETIC AND CONVENTIONAL MOTOR OILS
  • FOR USE ON PRE 1989 AND HIGH PERFORMANCE ENGINES
  • EASY TO USE – Simply empty entire 4oz contents of the bottle to a 4 to 6 quart oil change.
ZDDPPlus ZDDP Engine Oil Additive Zinc & Phosphorus 2 Bottles: image
96%
customers recommend this product
4.8/ 5
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
  • 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.
  • 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.
  • 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.
  • Greatly improves or eliminates cold start issues in all diesel engines.
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

REV X ZDDP Oil Additive – Zinc & Phosphorus

481 ratings | 2 offers | 481 Reviews
Price starts from: $11.95
Why we chose it
  • Provides Maximum Protection For Engine Break In.
  • Provides Maximum Metal To Metal Protection.
  • Protects Flat Tappet Camshafts (Hydraulic or Solid).
  • Treats 6 Quarts – The most concentrated form of ZINC (ZDDP) Additive available. 3000-3200 parts per million when blended with 6 quarts of oil.
  • Provides increased lubrication of Roller Lifter Bearings (Hydraulic or Solid).
REV X ZDDP Oil Additive - Zinc & Phosphorus: image
96%
customers recommend this product
4.8/ 5
Value for money4.8
Mileage4.7
7

Marvel Mystery Oil MM12R – 16 Fl Oz. (Pack of 2)

2,183 ratings | 12 offers | 2,183 Reviews
Price: $19.36$25.49
Why we chose it
  • Prevents oil breakdown caused by extreme temperatures
  • Kit Includes (2) 16oz. Bottles of Marvel Mystery Oil additive
  • Cleans and lubricates fuel injectors and carburetors
  • Reduces and prevents varnish and gum build-up
  • Prevents valve sticking and clatter
Marvel Mystery Oil MM12R - 16 Fl Oz. (Pack of 2): image
94%
customers recommend this product
4.7/ 5
Mileage4.6
Value for money4.4
8
Why we chose it
  • Prevent excessive wear reduced lifter and valve noise
  • Neutralized harmful engine acids reduced frictional drag
  • Removed engine deposits seals rings better
  • Improved power improved compression
  • Restores oil pressure
Hot Shot's Secret Original Stiction Eliminator 32 Fluid Ounce Bottle: image
94%
customers recommend this product
4.7/ 5
Easy to use4.6
Value for money4.3
Mileage4.2
9

Hot Shot’s Secret HSSFR332Z FR3 Friction Reducer 32 Fluid Ounce

686 ratings | 20 offers | 686 Reviews
Price: $25.52$45.65
Why we chose it
  • Reduces engine wear up to 43 percent and oil operating temperature
  • You can use the product in gas or diesel engines, works with synthetic or conventional oil
  • 32-ounce friction reducer engine additive reduces lifter and valve noise and restores lost compression
  • FR3 Friction Reducer increases horsepower and fuel economy up to 5 percent
  • 100% synthetic oil additive that protects engines and improves performance
Hot Shot's Secret HSSFR332Z FR3 Friction Reducer 32 Fluid Ounce: image
96%
customers recommend this product
4.8/ 5
Value for money4.4
Mileage4.3
Ranking the Brands
Archoil: 11.11%
Comp Cams: 11.11%
XADO: 11.11%
ZDDPlus: 11.11%
REV X: 22.22%
Marvel Mystery Oil: 11.11%
Hot Shot’s Secret: 22.22%

Comparison Table

Сomparison: Archoil AR9100 Oil Additive (16oz) for All Vehicles - Powerstroke Cold Starts, Eliminates Injector Problems: imageСomparison: COMP Cams 159 Engine Break-In Oil Additive, 12 oz. Bottle: imageСomparison: XADO Engine Oil additive - Protection for Engines - additive for wear Protection & rebuilding of Worn Metal Surfaces - Metal Conditioner with Revitalizant 1Stage Maximum (up to 5qt of Oil Capacity): imageСomparison: ZDDPPlus ZDDP Engine Oil Additive Zinc & Phosphorus 2 Bottles: imageСomparison: REV X Stiction Fix Oil Treatment - Two 4 fl. oz. Bottles: imageСomparison: REV X ZDDP Oil Additive - Zinc & Phosphorus: imageСomparison: Marvel Mystery Oil MM12R - 16 Fl Oz. (Pack of 2): imageСomparison: Hot Shot's Secret Original Stiction Eliminator 32 Fluid Ounce Bottle: imageСomparison: Hot Shot's Secret HSSFR332Z FR3 Friction Reducer 32 Fluid Ounce: image
Archoil AR9100 Oil Additive (16oz) for All Vehicles – Powerstroke Cold Starts, Eliminates Injector ProblemsCOMP Cams 159 Engine Break-In Oil Additive, 12 oz. BottleXADO Engine Oil additive – Protection for Engines – additive for wear Protection & rebuilding of Worn Metal Surfaces – Metal Conditioner with Revitalizant 1Stage Maximum (up to 5qt of Oil Capacity)ZDDPPlus ZDDP Engine Oil Additive Zinc & Phosphorus 2 BottlesREV X Stiction Fix Oil Treatment – Two 4 fl. oz. BottlesREV X ZDDP Oil Additive – Zinc & PhosphorusMarvel Mystery Oil MM12R – 16 Fl Oz. (Pack of 2)Hot Shot’s Secret Original Stiction Eliminator 32 Fluid Ounce BottleHot Shot’s Secret HSSFR332Z FR3 Friction Reducer 32 Fluid Ounce
ManufacturerArchoilCOMP CamsXADO Chemical GroupZDDPlusRev X Products, Inc.Rev X Products, Inc.Marvel Mystery OilHot ShotsHot Shot’s Secret
BrandArchoilComp CamsXADOZDDPlusREV XREV XMarvel Mystery OilHot Shot’s SecretHot Shot’s Secret
Item Weight1 pounds12.6 ounces12.3 ounces8 ounces8 ounces2.39 ounces2.03 pounds2 pounds2 pounds
Product Dimensions10 x 10 x 10 inches3.2 x 1.6 x 7.5 inches9.61 x 3.9 x 3.5 inches13 x 11 x 2 inches3.5 x 2 x 3.75 inches1.5 x 1.5 x 4 inches8.76 x 3.13 x 3.13 inches8.76 x 3.13 x 3.13 inches
Is Discontinued By ManufacturerNoNoNoNoNoNoNo
Sizeup to 5qt of oil capacity2 Pack16 oz. (2-Pack)

Products with 5 star rating

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