Best engine additive – Top 8 of 2020

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We read hundreds reviews, and put together a list of the most popular sellers. Check out the top engine additive below.


No. 1
Liqui Moly (20002) Cera Tec Friction Modifier - 300 ml
441 Reviews
Liqui Moly (20002) Cera Tec Friction Modifier - 300 ml
  • Mixable with all commercially available motor oils
  • Stable even under high thermal and dynamic permanent loads
  • No deposits and absolutely compatible with all commonly used filter systems
  • Resists extremely high and low temperatures
No. 2
BestLine Premium Synthetic Engine Treatment with Nano Diamond Technology Extreme Pressure Lubricant for All Vehicles Gas...
1 Reviews
BestLine Premium Synthetic Engine Treatment with Nano Diamond Technology Extreme Pressure Lubricant for All Vehicles Gas...
  • BESTLINE ENGINE TREATMENT: Increase power/gas mileage.
  • REDUCES FRICTION: Diamond Nano-lubricant noise remover additive creates boundary layer protection on metal
  • UNIVERSAL BESTLINE ADDITIVE: 100% Pure Synthetic use in gas or diesel car, truck, motorcycle engines
  • OIL ADDITIVE: Use 1 bottle for every 5 quarts of oil for smoother starts & maximum engine protection
  • TRY IT WITH CONFIDENCE: BestLine Engine Oil Treatment comes with a 100% money back guarantee
No. 3
TriboTEX Nano Oil Additive Car Engine Treatment: Add to Engine Lube - Makes High Mileage Cars Like New with a Synthetic...
172 Reviews
TriboTEX Nano Oil Additive Car Engine Treatment: Add to Engine Lube - Makes High Mileage Cars Like New with a Synthetic...
  • GROUNDBREAKING: Made in the USA – TriboTEX is a revolutionary engine oil additive. It contains synthetic nanoparticles developed with...
  • QUIETER & SMOOTHER PERFORMANCE: Reverses wear in bearings by building a diamond-like carbon coating.
  • UNIVERSAL: Compatible with all types of motor oil and can be used in gas or diesel engines. Use for both old and new cars. It is an...
  • EFFICIENT: Our masterfully engineered engine treatment improves fuel consumption and reduces engine noise. It is time to improve your engine...
  • GUARANTEED QUALITY: We know you will be delighted with this ground-breaking technology. Our treatment comes with a 100% satisfaction...
SaleNo. 4
Liqui Moly 2009 Anti-Friction Oil Treatment - 300 ml
721 Reviews
Liqui Moly 2009 Anti-Friction Oil Treatment - 300 ml
  • 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
SaleNo. 5
Slick 50 750002 Recharged High Mileage Engine Treatment, 15-Ounce
  • High Mileage solution to protect against power robbing friction heat and wear
  • Restores performance in engines due to wear and oil consumption in older engines
  • 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
  • Powerful detergents to remove and prevent oil sludge, use during your next oil change or between changes to replace lost additive content
SaleNo. 6
Liqui Moly 2037 Pro-Line Engine Flush - 500 Milliliters
426 Reviews
Liqui Moly 2037 Pro-Line Engine Flush - 500 Milliliters
  • Easy way to clean and flush the oil systems of gasoline and diesel engines
  • Gentle and rapid cleaning
  • Neutral to seals and other materials installed in the engine
  • Compatible with catalytic converters
  • Simple to use
SaleNo. 7
Bar's Leaks Engine Treatment Specially Formulated for High-Mileage Engines - 16.9 oz
  • 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
No. 8
XADO Engine Oil additive - Protection for Engines - additive for wear Protection & rebuilding of Worn Metal Surfaces -...
169 Reviews
XADO Engine Oil additive - Protection for Engines - additive for wear Protection & rebuilding of Worn Metal Surfaces -...
  • Engine oil additive restores the surfaces of the engine parts and compensates for the resulting wear
  • Restoration of engine compression | Repair of the surfaces
  • Provides active protection against overload and overheating | Extends lifespan
  • Lowers fuel consumption effectively | protects the engine against wear | Atomic metal conditioner
  • Motor oil additive with Revitalizant | Engine oil additive | Suitable for gasoline and gasoline engines