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10 Best Engine Oil Additives of October 2020

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  1. Lucas Oil 10278 Engine Oil Stop Leak, 1 Quart
    Lucas Oil 10278 Engine Oil Stop Leak, 1 Quart
    Lucas Oil 10278 Engine Oil Stop Leak, 1 Quart
    Lucas Oil
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    9.9
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    Product Highlights
    • Renews worn seals with no risk of damage or eventual corrosion
    • Contains no harmful solvents
    • Compatible with petroleum, semi-synthetic and full synthetic motor oils
    • Reduces engine noise and oil consumption, while raising oil pressure
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    Lucas Oil 10278 Engine Oil Stop Leak, 1 Review and Comparison
    $8.99 New
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    Lucas Oil 10278 Engine Oil Stop Leak, 1 Review and Comparison
    $27.00 Used
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    Lucas Oil 10278 Engine Oil Stop Leak, 1 Review and Comparison
    $12.99
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  2. Liqui Moly 2009 Anti-Friction Oil Treatment - 300 ml
    Liqui Moly 2009 Anti-Friction Oil Treatment - 300 ml
    Liqui Moly 2009 Anti-Friction Oil Treatment - 300 ml
    Liqui Moly
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    9.5
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    Product Highlights
    • Forms high load-bearing film of lubricant on all friction surfaces
    • Motor oil additive - liqui moly mos2 anti-friction (300 ml. can)
    • You will be surprised at how much better your engine sounds and how controlled it will be even at very high rpm
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    Liqui Moly 2009 Anti-Friction Oil Treatment - 300 Review and Comparison
    $7.99
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    Liqui Moly 2009 Anti-Friction Oil Treatment - 300 Review and Comparison
    $11.98
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  3. Prolong Super Lubricants PSL11000 Engine Treatment - 12 oz
    Prolong Super Lubricants PSL11000 Engine Treatment - 12 oz.
    Prolong Super Lubricants PSL11000 Engine Treatment - 12 oz.
    Prolong Super Lubricants
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    9.2
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    Product Highlights
    • Features engineering designed to treat metal surfaces of both gasoline and diesel fueled engines
    • Offers to protect the engine even when the motor oil is not yet fully circulating
    • Includes a formula with anti-friction metal treatment technology
    • Offers molecules that interact with metal surfaces and chemically bond to create a protective layer that reduces damaging friction and heat
    • Features a formula containing no solid particles such as ptfe resins, 'molys', zinc, copper, or graphite
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  4. Liqui Moly 2037 Pro-Line Engine Flush - 500 Milliliters
    Liqui Moly 2037 Pro-Line Engine Flush - 500 Milliliters
    Liqui Moly 2037 Pro-Line Engine Flush - 500 Milliliters
    Liqui Moly
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    9.0
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    Product Highlights
    • Gentle and rapid cleaning
    • Compatible with catalytic converters
    • Easy way to clean and flush the oil systems of gasoline and diesel engines
    • Neutral to seals and other materials installed in the engine
    • Simple to use
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    Liqui Moly 2037 Pro-Line Engine Flush - 500 Review and Comparison
    $12.52
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    Liqui Moly 2037 Pro-Line Engine Flush - 500 Review and Comparison
    $10.92
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    5. 7.9 Reviews
    How we Score
    9.5 features quality
    8.9 popularity
    8.4 brand reputation
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  5. Lucas Oil Products 10063 Engine Break-In Oil Additive - Plus Zinc
    Lucas Oil Products 10063 Engine Break-In Oil Additive - Plus Zinc
    Lucas Oil Products 10063 Engine Break-In Oil Additive - Plus Zinc
    Lucas oil
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    8.6
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    Product Highlights
    • Not designed for passenger car use
    • Excellent for flat tappet camshafts or as an additive
    • Affordable solutions
    • Exclusive blend of extreme pressure additives
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    Lucas Oil Products 10063 Engine Break-In Oil Additive Review and Comparison
    $15.99 New
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    Lucas Oil Products 10063 Engine Break-In Oil Additive Review and Comparison
    $29.00 Used
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    Lucas Oil Products 10063 Engine Break-In Oil Additive Review and Comparison
    $15.10
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  6. Lucas 32 Ounce 10001 Heavy Duty Oil Stabilizer-32 Oz
    Lucas 32 Ounce 10001 Heavy Duty Oil Stabilizer-32 Oz
    Lucas 32 Ounce 10001 Heavy Duty Oil Stabilizer-32 Oz
    Lucas Oil
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    8.3
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    Product Highlights
    • Easy to use, increases power and miles per gallon
    • The product is 32oz hd oil stabilizer
    • Made in usa, increase oil life at least 50 percent longer
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    Lucas 32 Ounce 10001 Heavy Duty Oil Stabilizer-32 Review and Comparison
    $9.99 New
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    Lucas 32 Ounce 10001 Heavy Duty Oil Stabilizer-32 Review and Comparison
    $29.00 Used
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    Lucas 32 Ounce 10001 Heavy Duty Oil Stabilizer-32 Review and Comparison
    $10.99
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    Lucas 32 Ounce 10001 Heavy Duty Oil Stabilizer-32 Review and Comparison
    $13.98
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  7. Restore
    Restore (00016 8-Cylinder Formula Engine Restorer & Lubricant - 16 oz.
    Restore (00016 8-Cylinder Formula Engine Restorer & Lubricant - 16 oz.
    Restore
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    8.1
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    Product Highlights
    • Restores horsepower
    • Reduces oil consumption
    • Restores cylinder compression
    • Restores engine performance
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    Restore Review and Comparison
    $8.97
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    Restore Review and Comparison
    $11.99
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  8. Liqui Moly (20002) Cera Tec Friction Modifier - 300 ml
    Liqui Moly (20002) Cera Tec Friction Modifier - 300 ml
    Liqui Moly (20002) Cera Tec Friction Modifier - 300 ml
    Liqui Moly
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    7.8
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    Product Highlights
    • Stable even under high thermal and dynamic permanent loads
    • Resists extremely high and low temperatures
    • Mixable with all commercially available motor oils
    • No deposits and absolutely compatible with all commonly used filter systems
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    Liqui Moly (20002) Cera Tec Friction Modifier Review and Comparison
    $21.25
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    Liqui Moly (20002) Cera Tec Friction Modifier Review and Comparison
    $26.53
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  9. BestLine Premium Synthetic Engine Treatment with Nano Diamond Technology Extreme Pressure Lubricant
    BestLine Premium Synthetic Engine Treatment with Nano Diamond Technology Extreme Pressure Lubricant for All Vehicles Gas or Diesel Cars Trucks – 12 oz
    BestLine Premium Synthetic Engine Treatment with Nano Diamond Technology Extreme Pressure Lubricant for All Vehicles Gas or Diesel Cars Trucks – 12 oz
    BestLine Superior Lubricants
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    7.6
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    Product Highlights
    • 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.
    • Universal bestline additive: 100% pure synthetic use in gas or diesel car, truck, motorcycle engines
    • Try it with confidence: bestline engine oil treatment comes with a 100% money back guarantee
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    BestLine Premium Synthetic Engine Treatment with Nano Diamond Review and Comparison
    $18.95
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    BestLine Premium Synthetic Engine Treatment with Nano Diamond Review and Comparison
    $18.45
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  10. ZDDPPlus ZDDP Engine Oil Additive Zinc & Phosphorus 2 Bottles
    ZDDPPlus ZDDP Engine Oil Additive Zinc & Phosphorus 2 Bottles
    ZDDPPlus ZDDP Engine Oil Additive Zinc & Phosphorus 2 Bottles
    ZDDPlus
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    7.1
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    Product Highlights
    • Easy to use - simply empty entire 4oz contents of the bottle to a 4 to 6 quart oil change.
    • For use on pre 1989 and high performance engines
    • Protect your engine - older cars with flat tapped lifters-cam need the added zinc for protection
    • Prevent metal on metal contact - zddplus alters characteristics to prevent metal on metal contact
    • Compatible with synthetic and conventional motor oils
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