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10 Best Engine Oil Additives

Updated December 2024

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Lucas Oil 10278 Engine Oil, 1. quarts

Lucas Oil

9.9

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Liqui Moly 20004 Hydraulic Lifter Additive

Liqui Moly

9.5

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Restore 00016 Engine, 16. Fluid Ounces

Restore

9.2

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ZDDPPlus ZDDP Engine Oil Additive Zinc & Phosphorus 2 Bottles

ZDDPlus

9.0

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

Liqui Moly

8.6

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Liqui Moly 2009 Anti-Friction Oil Treatment - 300 ml

Liqui Moly

8.3

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

Lucas Oil

8.1

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Lucas Oil 10001 Oil Stabilizer, 1. quarts

Lucas Oil

7.8

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

REV X

7.6

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BestLine Premium Synthetic Engine Treatment 1-Pack

BestLine Superior Lubricants

7.1

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