Best Engine Oil Additives In November 2024

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If you are looking for the Best Engine Oil Additives of top quality, read our detailed reviews on them here before making the purchase decision.

To help you in your search, we have completed this list of the Best Engine Oil Additives.

Top Rated Best Engine Oil Additives Of 2024

Rank	Product Name	Score
1	Rislone 4405 Engine Oil Supplement Concentrate with Zinc Treatment - 11 oz Buy Now	9.7 Buy Now
2	Lucas Oil 10278 Engine Oil Stop Leak Buy Now	9.5 Buy Now
3	Liqui Moly 2009 Anti-Friction Oil Treatment - 300 ml Buy Now	9.1 Buy Now
4	Liqui Moly 20004 Hydraulic Lifter Additive Buy Now	8.8 Buy Now
5	ZDDPPlus ZDDP Engine Oil Additive Zinc & Phosphorus 2 Bottles Buy Now	8.6 Buy Now
6	REV X ZDDP Oil Additive - Zinc for Flat Tappet Cams & Engine Buy Now	8.3 Buy Now
7	Slick 50 750002 Recharged High Mileage Engine Treatment, 15-Ounce Buy Now	8.1 Buy Now
8	BestLine Premium Synthetic Engine Treatment with Nano Diamond Technology Extreme Pressure Lubricant Buy Now	7.8 Buy Now
9	Restore Buy Now	7.5 Buy Now
10	Rislone Nano Prime Synthetic Engine & Oil Additive - 16.9 oz Buy Now	7.2 Buy Now

1. Rislone 4405 Engine Oil Supplement Concentrate with Zinc Treatment - 11 oz

• Prevents camshaft wear
• Increases engine life
• Makes newer oils work in older engines
• Reduces piston scuffing

2. Lucas Oil 10278 Engine Oil Stop Leak

• Fit type: universal

3. Liqui Moly 2009 Anti-Friction Oil Treatment - 300 ml

• 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
• Motor oil additive - liqui moly mos2 anti-friction (300 ml. can)

4. Liqui Moly 20004 Hydraulic Lifter Additive

• Cleans valve bores
• Suitable for use in vehicles with turbochargers and vehicles with catalytic converters
• Improves the lubrication properties of the oil
• Prevents engine noises caused by hydraulic tappets

5. ZDDPPlus ZDDP Engine Oil Additive Zinc & Phosphorus 2 Bottles

• Protect your engine - older cars with flat tapped lifters-cam need the added zinc for protection
• Easy to use - simply empty entire 4oz contents of the bottle to a 4 to 6 quart oil change.
• Compatible with synthetic and conventional motor oils
• Prevent metal on metal contact - zddplus alters characteristics to prevent metal on metal contact
• For use on pre 1989 and high performance engines

6. REV X ZDDP Oil Additive - Zinc for Flat Tappet Cams & Engine

• Provides increased lubrication of roller lifter bearings (hydraulic or solid).
• Provides maximum metal to metal protection.
• Provides maximum protection for engine break in.
• 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.

7. Slick 50 750002 Recharged High Mileage Engine Treatment, 15-Ounce

• Powerful detergents to remove and prevent oil sludge, use during your next oil change or between changes to replace lost additive content
• Restores performance in engines due to wear and oil consumption in older engines
• This product is dispensed in 10w-30 which is a multi-grade oil but is fully compatible with all multi grade motor oils and mono grade oils. it is fully compatible with all conventional, semi-synthetic and full synthetic oil types.
• High mileage solution to protect against power robbing friction heat and wear
• Revitalizes seals to help stop oil leaks and prevent them from ever occuring
• Powerful detergents to remove and prevent oil sludge, use during your next oil change or between changes to replace lost additive content

8. BestLine Premium Synthetic Engine Treatment with Nano Diamond Technology Extreme Pressure Lubricant

• Universal bestline additive: 100% pure synthetic use in gas or diesel car, truck, motorcycle engines
• Reduces friction: diamond nano-lubricant noise remover additive creates boundary layer protection on metal
• Oil additive: use 1 bottle for every 5 quarts of oil for smoother starts & maximum engine protection
• Bestline engine treatment: increase power/gas mileage.
• Try it with confidence: bestline engine oil treatment comes with a 100% money back guarantee

9. Restore

• Reduces oil consumption
• Restores horsepower
• Restores engine performance
• Restores cylinder compression

10. Rislone Nano Prime Synthetic Engine & Oil Additive - 16.9 oz

• This formula is enhanced with synthetic additives including: nan-tungsten and moly friction modifiers, anti-wear agents, and extreme pressure additives
• This unique rislone additive uses a fully-formulated gf-5/son-rated synthetic motor oil carrier that is backwards-compatible with all vehicles
• It contains a base synthetic oil to help improve mileage & performance while decreasing emissions
• Complete with rislone famous detergent and dispersant package
• It is designed to work fully with all oil viscosity grades including ow-20, ow-30, 5w-20, 5w-30, 10w-30, 5w-40, 15w-40 and all others