10 Best Oil Additive For Engine Knock of December 2025
List of Top Rated Oil Additive For Engine Knock from thousands of customer reviews & feedback.
Updated On Dec 2025
1,521 Reviews Studied
1
Prolong Super Lubricants PSL11000 Engine Treatment - 12 oz. Read Review
- Includes a Formula with Anti-Friction Metal Treatment Technology
- Features Engineering Designed to Treat Metal Surfaces of Both Gasoline and Diesel Fueled Engines
- Offers Molecules that Interact with Metal Surfaces and Chemically Bond to Create a Protective Layer that Reduces Damaging Friction and Heat
- 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
2
REV X High Performance Oil Additive - 4 fl. oz. Bottle Read Review
- 4 fl. oz. bottle of REV X High Performance Oil Additive. Will treat up to 6 quarts of oil per bottle.
- 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.
- Removes stiction, common in HEUI Injectors, without using harmful and dangerous chemical strippers. For HEUI Injector Stiction, it is recommended to use two 4 fl. oz. bottles.
- 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 engines. Works great in all gas powered engines.
3
BestLine Premium Synthetic Engine Treatment with Nano Diamond Technology Extreme Pressure Lubricant for All Vehicles Gas... Read Review
- LONG LASTING ENGINE: BestLine uses its revolutionary formula to provide your vehicle with maximum engine life protection, proven to increase the life of your engine by 80%!
- VISIBLE BENEFITS: This engine treatment reduces the likelihood of low-speed, pre-ignition, reduces friction for improved fuel mileage, and offers protection against engine wear.
- 100% PURE SYNTHETIC: BestLine lubricant has been formulated with a full-synthetic base oil, designed specifically for longer drain intervals.
- UNIVERSALLY COMPATIBLE: This product can be used on a variety of new or old automobiles. BestLine is compatible with all types of motor oil and can be used in gas or diesel engines.
- TRUST BESTLINE: Our product is unique in that it is the only engine treatment with Diamond Nano-Lube for extreme boundary layer protection. If you are not satisfied with BestLine, we offer a 100% money back guarantee.
4
LUCAS LUC10130 Synthetic Oil Stabilizer. Quart Read Review
- Fit Type: Universal
- Use With Synthetic And Non-Synthetic Oils
- Through Creativity, Productivity And Innovation - This Brand Continues To Develop The Finest Automotive Accessories
- Country of origin : China
5
TriboTEX Small Oil Additive Engine Treatment: Add to Engine Oil - Makes High Mileage Engines Like New with a Synthetic M... Read Review
- 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
6
Liqui Moly 20004 Hydraulic Lifter Additive Read Review
- Improves the lubrication properties of the oil
- Cleans valve bores
- Suitable for use in vehicles with turbochargers and vehicles with catalytic converters
- Prevents engine noises caused by hydraulic tappets
7
Liqui Moly 2009 Anti-Friction Oil Treatment - 300 ml Read Review
- Motor oil additive - Liqui Moly MoS2 anti-friction (300 ml. Can)
- Forms High load-bearing film of lubricant on all friction surfaces
- You will be surprised at how much better your engine sounds and how controlled it will be even at very high RPM
8
LUCAS 10001 Heavy Duty Oil Stabilizer - 32 oz. Read Review
- The product is 32oz hd oil stabilizer
- Easy to use, increases power and miles per gallon
- Made in USA, increase oil life at least 50 percent longer
9
Rislone 4102 Concentrated Engine Treatment, Conditioner and cleaner, 16.9oz Yellow Read Review
- 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
10
2 - Pack Bg MOA Motor Oil Additive (2) 11oz. Cans Read Review
- BG MOA fortifies all qualities of engine oil, providing superior, long-lasting engine protection and maintain peak engine performance.
- It prevents engine oil oxidation and thickening under even the most intense driving conditions