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10 bestEngine Additivesof November 2024

112M consumers helped this year.

1

Chevron Techron Concentrate Plus Fuel System Cleaner - 20 oz.
Chevron Techron Concentrate Plus Fuel System Cleaner - 20 oz.

Chevron

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

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

Lucas Oil

9.8

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4

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

Liqui Moly

9.7

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5

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

Liqui Moly

9.4

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Related productsUp to 9% off

Liqui Moly 2009 Anti-Friction Oil Treatment-pk4

Liqui Moly 2009 Anti-Friction Oil Treatment-pk4

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*H/D Oil Stabilizer/4x1/Gallon

*H/D Oil Stabilizer/4x1/Gallon

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Marvel Mystery Oil 32oz. (Pack 2)

Marvel Mystery Oil 32oz. (Pack 2)

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STP 17174 Multipurpose Motor Treatment, 473ml

STP 17174 Multipurpose Motor Treatment, 473ml

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13% off

6

STP Super Concentrated Fuel Injector Cleaner Fuel Additive, 155ml
STP Super Concentrated Fuel Injector Cleaner Fuel Additive, 155ml

STP

9.2

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7

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

Liqui Moly

9.0

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7% off

8

Gumout 30002 Multi-System Tune-Up, 473ml
Gumout 30002 Multi-System Tune-Up, 473ml

Gumout

8.7

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8% off

9

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

8.5

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10

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

Lucas Oil

8.2

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