TenBest

10 Best Engine Additives

Updated December 2024

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Liqui Moly 20004 Hydraulic Lifter Additive

Liqui Moly

9.7

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Restore 00016 Engine, 16. Fluid Ounces

Restore

9.4

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Liqui Moly 2009 Anti-Friction Oil Treatment - 300 ml

Liqui Moly

9.3

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Liqui Moly 2037 Pro-Line Engine Flush - 500 Milliliters

Liqui Moly

8.9

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Liqui Moly (20002) Cera Tec Friction Modifier - 300 ml

Liqui Moly

8.7

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ZDDPPlus ZDDP Engine Oil Additive Zinc & Phosphorus 2 Bottles

ZDDPlus

8.2

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BestLine Premium Synthetic Engine Treatment 1-Pack

BestLine Superior Lubricants

8.0

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

BestLine Superior Lubricants

7.8

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Lucas Oil LUC10063 Engine Break in Oil, 16. Fluid Ounces

Lucas Oil

7.4

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RISLONE 4405 Concentrated Engine Oil Supplement, 11oz

Rislone

7.2

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