When you shop through links on our site, we may earn an affiliate commission. This educational content is not intended to be a substitute for professional advice.

Taste Stl

20 Best Oil Additive For High Mileage Engines (2022 Updated)

An oil additive is a chemical compound that is added to lubricating oils to improve their performance and extend their life. The most common oil additives are anti-wear additives, which prevent wear and tear on engine parts; friction modifiers, which reduce friction and improve fuel economy; and detergents, which keep engines clean by preventing the build-up of deposits on engine surfaces.

20 Best Oil Additive For High Mileage Engines

Product Image Product Name Features Price

Slick 50 (750002) Recharged High Mileage Engine Treatment – 15 oz.

  • Will not cause corrosion of engine components
  • Compatible with all major types of motor oil
  • Will not clog oil filters

Stp Oil Treatment + Stop Leak, High Mileage – 15 fl oz

  • Fights friction in vehicles with over 75,000 miles
  • Rejuvenates seals and gaskets
  • Contains zinc anti-wear agent ZDDP

Motor Honey C162-12 Premium Engine Oil Treatment 14 fl oz

  • Protects under high temperature and high load operations
  • Extends oil life
  • Coats engine parts and quiets noisy engines

Rev x ZDDP Oil Additive Zinc

  • Creates an anti-wear layer at friction points to prevent metal-to-metal contact and eliminate wear.
  • Engine break-in where the new camshaft and lifters need extra protection, and ZDDP is perfect for that.

Lucas Oil High Mileage 1 qt Oil Stabilizer

  • Eliminates dry starts, the #1 cause of wear in new engines
  • Reduces friction and heat to allow optimum mechanical efficiency

TriboTEX Nano Oil Additive Car Engine Treatment: Add to Engine Lube – Makes High …

  • Contains synthetic nanoparticles developed with funding from the U.S. Department of Energy, NASA, & National Science Foundation

Lucas Heavy Duty Oil Stabilizer – 32 oz bottle

  • Increase oil life at least 50% longer
  • Reduces oil consumption
  • Eliminates dry starts

Rev x High Performance Oil Additive – 4 fl. oz.

  • 4 fl. oz. bottle of REV X High Performance Oil Additive in our stiction fix retail box. Will treat up to 6 quarts of oil.

TriboTEX Small Oil Additive Engine Treatment Add to Engine Oil – Make

  • Contains synthetic nanoparticles developed with the U.S. Department of Energy, NASA, & National Science Foundation
  • Reverses wear in bearings by building a diamond-like carbon coating

Rislone Engine Treatment Concentrate 16.9 oz

  • Reduces Friction And Wear
  • Quiets Noisy Lifters And Valves
  • Removes And Prevents Sludge

Slick 50 Engine Treatment Oil Additive Treatment 500ml 61399500

  • Helps to protect the engine against fiction and heat when operating under stress, such as towing, carrying heavy loads or in heavy traffic.

Bar's Rislone Engine Treatment – 32 fl oz bottle

  • Frees valves and lifters
  • Reduces friction and wear
  • Maintains oil viscosity

Lucas Oil 1 Gal Heavy-Duty Oil Stabilizer

  • 1 gal

TriboTEX Small Oil Additive Engine Treatment Add to Engine Oil – Make

  • Contains synthetic nanoparticles developed with the U.S. Department of Energy, NASA, & National Science Foundation
  • Reverses wear in bearings by building a diamond-like carbon coating

Lucas Synthetic Oil Stabilizer – 32 fl oz bottle

  • Light enough for an import and tough enough for a semi.
  • Eliminates noise and wear associated with today’s light weight motor oils.

Lucas Oil 10063 Engine Break in Oil Additive 16 oz.

  • Protects camshaft lifters and valve train during break-in period of motor
  • Excellent for flat tappet camshafts during break-in or as an additive to any motor oil to prevent premature wear

Liqui Moly Engine Oil Additive 20002

  • Wear protection for engines, transmissions, pumps and compressors.
  • Cera Tec is added to the oil and is self-mixing.
  • Sufficient for 5 l oil volume.

Sea Foam Ultimate Oil Stabilizer 32 oz

  • 100% Synthetic
  • For Use In All Oils Conventional Or Synthetic
  • Helps Reduce Heat
Slick 50 (750002) Recharged High Mileage Engine Treatment – 15 oz.
  • Will not cause corrosion of engine components
  • Compatible with all major types of motor oil
  • Will not clog oil filters
Stp Oil Treatment + Stop Leak, High Mileage – 15 fl oz
  • Fights friction in vehicles with over 75,000 miles
  • Rejuvenates seals and gaskets
  • Contains zinc anti-wear agent ZDDP
Motor Honey C162-12 Premium Engine Oil Treatment 14 fl oz
  • Protects under high temperature and high load operations
  • Extends oil life
  • Coats engine parts and quiets noisy engines
Rev x ZDDP Oil Additive Zinc
  • Creates an anti-wear layer at friction points to prevent metal-to-metal contact and eliminate wear.
  • Engine break-in where the new camshaft and lifters need extra protection, and ZDDP is perfect for that.
Lucas Oil High Mileage 1 qt Oil Stabilizer
  • Eliminates dry starts, the #1 cause of wear in new engines
  • Reduces friction and heat to allow optimum mechanical efficiency
TriboTEX Nano Oil Additive Car Engine Treatment: Add to Engine Lube – Makes High …
  • Contains synthetic nanoparticles developed with funding from the U.S. Department of Energy, NASA, & National Science Foundation
Lucas Heavy Duty Oil Stabilizer – 32 oz bottle
  • Increase oil life at least 50% longer
  • Reduces oil consumption
  • Eliminates dry starts
Rev x High Performance Oil Additive – 4 fl. oz.
  • 4 fl. oz. bottle of REV X High Performance Oil Additive in our stiction fix retail box. Will treat up to 6 quarts of oil.
TriboTEX Small Oil Additive Engine Treatment Add to Engine Oil – Make
  • Contains synthetic nanoparticles developed with the U.S. Department of Energy, NASA, & National Science Foundation
  • Reverses wear in bearings by building a diamond-like carbon coating
Rislone Engine Treatment Concentrate 16.9 oz
  • Reduces Friction And Wear
  • Quiets Noisy Lifters And Valves
  • Removes And Prevents Sludge
Slick 50 Engine Treatment Oil Additive Treatment 500ml 61399500
  • Helps to protect the engine against fiction and heat when operating under stress, such as towing, carrying heavy loads or in heavy traffic.
Bar's Rislone Engine Treatment – 32 fl oz bottle
  • Frees valves and lifters
  • Reduces friction and wear
  • Maintains oil viscosity
Lucas Oil 1 Gal Heavy-Duty Oil Stabilizer
  • 1 gal
TriboTEX Small Oil Additive Engine Treatment Add to Engine Oil – Make
  • Contains synthetic nanoparticles developed with the U.S. Department of Energy, NASA, & National Science Foundation
  • Reverses wear in bearings by building a diamond-like carbon coating
Lucas Synthetic Oil Stabilizer – 32 fl oz bottle
  • Light enough for an import and tough enough for a semi.
  • Eliminates noise and wear associated with today’s light weight motor oils.
Lucas Oil 10063 Engine Break in Oil Additive 16 oz.
  • Protects camshaft lifters and valve train during break-in period of motor
  • Excellent for flat tappet camshafts during break-in or as an additive to any motor oil to prevent premature wear
Liqui Moly Engine Oil Additive 20002
  • Wear protection for engines, transmissions, pumps and compressors.
  • Cera Tec is added to the oil and is self-mixing.
  • Sufficient for 5 l oil volume.
Sea Foam Ultimate Oil Stabilizer 32 oz
  • 100% Synthetic
  • For Use In All Oils Conventional Or Synthetic
  • Helps Reduce Heat

1. Slick 50 (750002) Recharged High Mileage Engine Treatment – 15 oz.

Slick 50 (750002) Recharged High Mileage Engine Treatment - 15 oz.

  • Will not cause corrosion of engine components
  • Compatible with all major types of motor oil
  • Will not clog oil filters
  • Formulated to revitalize the performance of your high mileage vehicle

Check Latest Price

Sold By Price
Amazon.com
eBay
Walmart
NAPA Auto Parts

Product Details

Specifications

Details
Product Dimensions 2.05 x 9.37 x 3.46 inches
Country of Origin USA
Viscosity 10w-30

Reviews From Real Customers

SlickFifteyFan
Family guy

2. Stp Oil Treatment + Stop Leak, High Mileage – 15 fl oz

Stp Oil Treatment + Stop Leak, High Mileage - 15 fl oz

  • Fights friction in vehicles with over 75,000 miles
  • Rejuvenates seals and gaskets
  • Contains zinc anti-wear agent ZDDP
  • Helps stop engine leaks, noise and smoking

Check Latest Price

Sold By Price
Amazon.com
eBay
Walmart
AutoZone

Product Details

Specifications

Details
Units in Package 1
Unit Size 15 fl oz
Directions Direction: Add 1 bottle to 4-5 quarts of oil at or between oil changes.
Warnings Caution: Causes eye and skin irritation. Read caution on back. Caution: Keep out of reach of children. Eye irritant. Do not swallow. Avoid eye and skin contact. Wash hands thoroughly with soap and water after use. First Aid: If swallowed – Do not induce vomiting. Call a doctor or poison center. Eyes: Flush immediately with water for 15 minutes. If irritation persists, call a doctor. Skin: Wash with soap and water. Call a doctor if irritation persists. Contains: Zinc dialkyl dithiophosphate and mineral oil.

Reviews From Real Customers

Crystal Milligan
Where's the lemonade?

3. Motor Honey C162-12 Premium Engine Oil Treatment 14 fl oz

Motor Honey C162-12 Premium Engine Oil Treatment 14 fl oz

  • Protects under high temperature and high load operations
  • Extends oil life
  • Coats engine parts and quiets noisy engines
  • Reduces oil burning and consumption

Check Latest Price

Sold By Price
Amazon.com – Seller
eBay
AutoZone
MechanicSurplus.com

Product Details

Specifications

Details
Assembled Depth (in) 1.5 in
Assembled Height (in) 8.75 in
Assembled Width (in) 3.13 in
Assembled Weight (lbs) .890 lbs
Item is Shipped at this Packaging Level N

Reviews From Real Customers

Lukas
Member 1955824965
Member 1326486026

4. Rev x ZDDP Oil Additive Zinc

Rev x ZDDP Oil Additive Zinc

  • Creates an anti-wear layer at friction points to prevent metal-to-metal contact and eliminate wear.
  • Engine break-in where the new camshaft and lifters need extra protection, and ZDDP is perfect for that.
  • Mandatory for all flat tappet engines.
  • Works in both synthetic and standard mineral-based oils.
  • Two fluid ounces mixed with 6 quarts of oil create a ratio of 3000 – 3200 parts per million (ppm).

Check Latest Price

Sold By Price
Amazon.com – Seller
eBay
Rev X Products
CARiD.com

Product Details

Specifications

Details
Product Dimensions 1.5 x 1.5 x 4 inches
Is Discontinued By Manufacturer No

Reviews From Real Customers

cthegreat1
7136flaco
ashwaywolfe

5. Lucas Oil High Mileage 1 qt Oil Stabilizer

Lucas Oil High Mileage 1 qt Oil Stabilizer

  • Eliminates dry starts, the #1 cause of wear in new engines
  • Reduces friction and heat to allow optimum mechanical efficiency
  • Creates a coating that clings to metallic surfaces, eliminating dry starts that create the most damage and wear in an older engine

Check Latest Price

Sold By Price
Amazon
Walmart
AutoZone
Advance Auto Parts

Product Details

Specifications

Details
Weight 2 oz

Reviews From Real Customers

Timmyp
K A
moto

6. TriboTEX Nano Oil Additive Car Engine Treatment: Add to Engine Lube – Makes High …

TriboTEX Nano Oil Additive Car Engine Treatment: Add to Engine Lube - Makes High ...

  • Contains synthetic nanoparticles developed with funding from the U.S. Department of Energy, NASA, & National Science Foundation
  • Reverses wear in bearings by building a diamond-like carbon coating
  • Compatible with all types of motor oil and can be used in gas or diesel engines
  • Improves fuel consumption and reduces engine noise

Check Latest Price

Sold By Price
Amazon
eBay
Walmart – TriboTEX
TriboTEX

Product Details

Specifications

Details
Please contact us at [email protected] or +1-509-339-7771

Reviews From Real Customers

P.R.
N.S.
L.M.

7. Lucas Heavy Duty Oil Stabilizer – 32 oz bottle

Lucas Heavy Duty Oil Stabilizer - 32 oz bottle

  • Increase oil life at least 50% longer
  • Reduces oil consumption
  • Eliminates dry starts
  • Raises oil pressure

Check Latest Price

Sold By Price
Amazon
Walmart
AutoZone
Advance Auto Parts

Product Details

Specifications

Details
Units in Package 1
Unit Size 32 fl oz
Directions Use 20% of system capacity (example: 1 qt oil stabilizer with 4 qts motor oil). In badly worn engines use up to 60% of system capacity. Use in every oil change. For total protection in newer engines and to stop smoking, knocking and oil consumption in older engines (diesel, gasoline or high performance). At temperatures below 5 degrees F (-15 degrees C) we recommend using Lucas Pure Synthetic Oil Stabilizer (Part No. 10130). Ford Powerstroke diesels use Lucas Pure Synthetic Stabilizer, 1 qt. In light duty manual transmissions use 25%. In heavy duty transmissions use 25-50%. Controls rattle, leaks, heat, wear and hard shifting. To stop noise and wear in differentials, use 50-100%. No special additives needed for limited slip. Perfect for transfer cases, use 50%. Also a must for air compressors and lawnmowers, use 20-25%.
Warnings Keep out of reach of children. Harmful if swallowed.

Reviews From Real Customers

Avis fourni par supercheapauto.com.au
SteveO
Derpius

8. Rev x High Performance Oil Additive – 4 fl. oz.

Rev x High Performance Oil Additive - 4 fl. oz.

  • 4 fl. oz. bottle of REV X High Performance Oil Additive in our stiction fix retail box. Will treat up to 6 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. Works just as great in all gas powered engines.

Check Latest Price

Sold By Price
Amazon
eBay
Rev X Products
CARiD.com

Product Details

Specifications

Details
Part Type Engine Oil Additives
Oil Additive Type Oil treatment
Oil Volume 4 oz.
Synthetic No

Reviews From Real Customers

1149crawford
JASON
kott9376

9. TriboTEX Small Oil Additive Engine Treatment Add to Engine Oil – Make

TriboTEX Small Oil Additive Engine Treatment Add to Engine Oil - Make

  • Contains synthetic nanoparticles developed with the U.S. Department of Energy, NASA, & National Science Foundation
  • Reverses wear in bearings by building a diamond-like carbon coating
  • Compatible with all types of motor oil and can be used in gas or diesel engines
  • Improves fuel consumption and reduces engine noise
  • Safe for wet clutches in motorcycles

Check Latest Price

Sold By Price
Amazon
eBay
Walmart – TriboTEX
TriboTEX

Product Details

Specifications

Details
Please contact us at [email protected]

10. Rislone Engine Treatment Concentrate 16.9 oz

Rislone Engine Treatment Concentrate 16.9 oz

  • Reduces Friction And Wear
  • Quiets Noisy Lifters And Valves
  • Removes And Prevents Sludge
  • Used For: Remove and Prevent Sludge/ Reduce Friction and Wear
  • Unit Size: 16.9 Ounce

Check Latest Price

Sold By Price
Amazon
eBay
Walmart
AutoZone

Product Details

Specifications

Details
Warranty 30 Day Warranty
Unit Size 16.9 Ounce
Country of Origin USA

Reviews From Real Customers

Jason Gaudencio
bruce.t

11. Slick 50 Engine Treatment Oil Additive Treatment 500ml 61399500

Slick 50 Engine Treatment Oil Additive Treatment 500ml 61399500

  • Helps to protect the engine against fiction and heat when operating under stress, such as towing, carrying heavy loads or in heavy traffic.
  • Contains proprietary friction modifier- creates an enhanced layer of lubrication, minimizing friction produced heat, for a smoother operation.
  • Anti-wear agent forms a self-regenerating protective surface between metal parts to prevent these grating together.

Check Latest Price

Sold By Price
Amazon
Bonanza – roxy media’s booth
bigamart.com

Product Details

Specifications

Details
Product Dimensions 3.35 x 1.89 x 7.09 inches
Is Discontinued By Manufacturer No

Reviews From Real Customers

techtoysareus
1bicker1
Vicabolics

12. Bar’s Rislone Engine Treatment – 32 fl oz bottle

Bar's Rislone Engine Treatment - 32 fl oz bottle

  • Frees valves and lifters
  • Reduces friction and wear
  • Maintains oil viscosity
  • Cleans and conditions engines
  • Dissolves and removes harmful deposits

Check Latest Price

Sold By Price
Amazon
eBay
Walmart
NAPA Auto Parts

Product Details

Specifications

Details
Assembled Depth (in) 2.5 in
Assembled Height (in) 8.9 in
Assembled Width (in) 4.3 in
Assembled Weight (lbs) 2.0 lbs
Item has MSDS (SDS)? Y

Reviews From Real Customers

Mhambster
Chandran R.
Dadthebank

13. Super Tech Motor Oil Additive – 32 oz

Super Tech Motor Oil Additive - 32 oz

Check Latest Price

Sold By Price
Amazon
Walmart

Product Details

Reviews From Real Customers

JustDave
james
nannie

14. Lucas Oil 1 Gal Heavy-Duty Oil Stabilizer

Lucas Oil 1 Gal Heavy-Duty Oil Stabilizer

  • 1 gal

Check Latest Price

Sold By Price
Amazon
eBay
Walmart
Tractor Supply Company

Product Details

Specifications

Details
Weight 8 oz

Reviews From Real Customers

D Kamal
bigstevejrjr

15. TriboTEX Small Oil Additive Engine Treatment Add to Engine Oil – Make

TriboTEX Small Oil Additive Engine Treatment Add to Engine Oil - Make

  • Contains synthetic nanoparticles developed with the U.S. Department of Energy, NASA, & National Science Foundation
  • Reverses wear in bearings by building a diamond-like carbon coating
  • Compatible with all types of motor oil and can be used in gas or diesel engines
  • Improves fuel consumption and reduces engine noise
  • Safe for wet clutches in motorcycles

Check Latest Price

Sold By Price
Amazon
eBay
Walmart – TriboTEX
TriboTEX

Product Details

Specifications

Details
Please contact us at [email protected]

16. Lucas Synthetic Oil Stabilizer – 32 fl oz bottle

Lucas Synthetic Oil Stabilizer - 32 fl oz bottle

  • Light enough for an import and tough enough for a semi.
  • Eliminates noise and wear associated with today’s light weight motor oils.
  • Use with synthetic and non-synthetic oils.
  • Cuts internal friction for more power and adds needed lubricity to any oil.

Check Latest Price

Sold By Price
Amazon
Walmart
Home Depot
AutoZone

Product Details

Specifications

Details
Product Type Oil stabilizer
Size 32 oz.
Product Weight 2.03 lb
Dimensions L x W x H (in.) 3.30 x 3.30 x 11.75 in

Reviews From Real Customers

BigPapaBear

17. Lucas Oil 10063 Engine Break in Oil Additive 16 oz.

Lucas Oil 10063 Engine Break in Oil Additive 16 oz.

  • Protects camshaft lifters and valve train during break-in period of motor
  • Excellent for flat tappet camshafts during break-in or as an additive to any motor oil to prevent premature wear
  • Exclusive blend of extreme pressure additives
  • Add one bottle with every oil change to increase the zinc content of your motor oil
  • Designed for race applications requiring additional extreme pressure additives

Check Latest Price

Sold By Price
Amazon
eBay
Walmart
Summit Racing

Product Details

Specifications

Details
Weight 1.14 oz

Reviews From Real Customers

WD
Wyman
MAUREECE

18. Liqui Moly Engine Oil Additive 20002

Liqui Moly Engine Oil Additive 20002

  • Wear protection for engines, transmissions, pumps and compressors.
  • Cera Tec is added to the oil and is self-mixing.
  • Sufficient for 5 l oil volume.
  • With long-term effect for 50,000 km.
  • Not suitable for use with wet clutches!

Check Latest Price

Sold By Price
Amazon
eBay – sefine
TRUCKiD.com
CARiD.com

Product Details

Specifications

Details
Weight 0.8 lb

Reviews From Real Customers

BrittanyMaria
roberburga9
Mukmuk

19. STP High Mileage Oil Treatment + Stop Leak (15 Fluid Ounces)

STP High Mileage Oil Treatment + Stop Leak (15 Fluid Ounces)

Check Latest Price

Sold By Price
Amazon
Walmart – Advance Auto Parts

Product Details

Reviews From Real Customers

Chong
Gizmo
Iskandar

20. Sea Foam Ultimate Oil Stabilizer 32 oz

Sea Foam Ultimate Oil Stabilizer 32 oz

  • 100% Synthetic
  • For Use In All Oils Conventional Or Synthetic
  • Helps Reduce Heat
  • Quiet Internal Engine Noise
  • Adds Lubricity

Check Latest Price

Sold By Price
Walmart
Advance Auto Parts
RVupgrades.com
Beach Audio

Product Details

Specifications

Details
Synthetic Oil Compatible Yes
Diesel Compatible No

Reviews From Real Customers

MJM3871

Conclusion

Oil additives are not necessary for high mileage engines and can actually do more harm than good. Over time, engines build up deposits from oil and other fluids that can cause problems. These deposits can clog oil passages, leading to reduced oil flow and increased wear.

Adding an oil additive can actually increase the amount of deposits in your engine, leading to even more problems.

Similar Posts

Leave a Reply

Your email address will not be published. Required fields are marked *