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10 bestEngine Additivesof August 2025

112M consumers helped this year.

1

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

Lucas Oil

9.8

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2

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

Liqui Moly

9.6

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3

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

Liqui Moly

9.5

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4

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

Liqui Moly

9.3

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16% off

5

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

9.1

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Related productsUp to 21% off

Lucas Oil 10016 Complete Engine Treatment - 16 fl oz

Lucas Oil 10016 Complete Engine Treatment - 16 fl oz

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

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

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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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3 cans of BG EPR Engine Performance Restoration

3 cans of BG EPR Engine Performance Restoration

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11% off

6

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

Lucas Oil

8.8

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7

Lucas Oil 10279 Engine Oil Stop Leak - 1 Gallon
Lucas Oil 10279 Engine Oil Stop Leak - 1 Gallon

Lucas Oil

8.6

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19% off

8

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

STA-BIL

8.3

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6% off

9

Lucas Oil 10063 Engine Break-In Oil Additive - 16 oz
Lucas Oil 10063 Engine Break-In Oil Additive - 16 oz

LUCAS

8.0

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6% off

10

New BG 44K Platinum, EPR, MOA
New BG 44K Platinum, EPR, MOA

BG(0002698761)

7.8

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