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10 bestEngine Additivesof November 2025

112M consumers helped this year.

1

Lucas 10013 Fuel Treatment - 1 Gallon
Lucas 10013 Fuel Treatment - 1 Gallon

Lucas Oil

10.0

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2

Red Line (60103) Complete SI-1 Fuel System Cleaner - 15 Ounce
Red Line (60103) Complete SI-1 Fuel System Cleaner - 15 Ounce

Red Line

10.0

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3

*H/D Oil Stabilizer/4x1/Gallon
*H/D Oil Stabilizer/4x1/Gallon

Lucas Oil

9.8

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4

Liqui Moly 20004 Hydraulic Lifter Additive
Liqui Moly 20004 Hydraulic Lifter Additive

Liqui Moly

9.6

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5

Liqui Moly 2009 Anti-Friction Oil Treatment-pk4
Liqui Moly 2009 Anti-Friction Oil Treatment-pk4

Liqui Moly

9.4

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Related productsUp to 10% off

Lucas Oil 10279 Engine Oil Stop Leak - 1 Gallon

Lucas Oil 10279 Engine Oil Stop Leak - 1 Gallon

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STA-BIL Fast Fix - Small Engine Treatment, Cleans Carburetors and Injectors, Fixes Rough Running Engines, Eliminates Water, Treats Up to 20 Gallons, 8oz (22304), Green

STA-BIL Fast Fix - Small Engine Treatment, Cleans Carburetors and Injectors, Fixes Rough Running Engines, Eliminates Water, Treats Up to 20 Gallons, 8oz (22304), Green

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Marvel Mystery Oil MM12R - 16 Fl Oz. (Pack of 2)

Marvel Mystery Oil MM12R - 16 Fl Oz. (Pack of 2)

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Lucas Oil 10016 Complete Engine Treatment - 16 fl oz

Lucas Oil 10016 Complete Engine Treatment - 16 fl oz

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6

Liqui Moly 2020 Motor Oil Saver - 300 ml
Liqui Moly 2020 Motor Oil Saver - 300 ml

Liqui Moly

9.2

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7

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

Liqui Moly

8.9

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12% off

8

STA-BIL Fast Fix Small Engine Treatment - Cleans Carbs and Injectors - Fixes Rough Running Engines - Eliminates Water - Treats 10 Gallons, 4 fl. oz. (22303)
STA-BIL Fast Fix Small Engine Treatment - Cleans Carbs and Injectors - Fixes Rough Running Engines - Eliminates Water - Treats 10 Gallons, 4 fl. oz. (22303)

STA-BIL

8.7

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9

3 cans of BG EPR Engine Performance Restoration
3 cans of BG EPR Engine Performance Restoration

BG(0002698761)

8.5

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10

Bg Products MOA & EPR Motor Oil Additive Lubrication Supplement Engine Restore
Bg Products MOA & EPR Motor Oil Additive Lubrication Supplement Engine Restore

BG(0002698761)

8.2

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