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10 bestFuel Additivesof November 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

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

Red Line

9.6

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3

BG 44K Fuel System Cleaner Power Enhancer 4 Pack 11oz can
BG 44K Fuel System Cleaner Power Enhancer 4 Pack 11oz can

BG

9.4

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4

2 Pack Bg 44k Fuel System Cleaner Power Enhancer 11 Oz Cans
2 Pack Bg 44k Fuel System Cleaner Power Enhancer 11 Oz Cans

BG(0002698761)

9.2

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7% off

5

STP 78574-12PK Octane Booster - 5.25 fl. oz., (Pack of 12)
STP 78574-12PK Octane Booster - 5.25 fl. oz., (Pack of 12)

STP

9.0

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Related productsUp to 10% off

Royal Purple 11722 Max-Clean Fuel System Cleaner and Stabilizer, 20-Ounce Bottle

Royal Purple 11722 Max-Clean Fuel System Cleaner and Stabilizer, 20-Ounce Bottle

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Klotz Higher Octane Booster, Multipurpose Fuel Additive for Gasoline – 4 Pack of 6-Ounce Bottles

Klotz Higher Octane Booster, Multipurpose Fuel Additive for Gasoline – 4 Pack of 6-Ounce Bottles

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Lucas 10020 Fuel Treatment - 5.25 oz

Lucas 10020 Fuel Treatment - 5.25 oz

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Lucas Upper Cylinder Lubricant & Fuel Injector Cleaner (5.25 oz.)-12 Pack

Lucas Upper Cylinder Lubricant & Fuel Injector Cleaner (5.25 oz.)-12 Pack

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6

Marvel Mystery Oil MM13R-6PK - 32 Fl Oz. (Pack of 6)
Marvel Mystery Oil MM13R-6PK - 32 Fl Oz. (Pack of 6)

Marvel Mystery Oil

8.7

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7

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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9% off

8

Fuel Treatment/1x1/Quart
Fuel Treatment/1x1/Quart

Lucas Oil

8.2

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7% off

9

Gumout 30001 All-in-One Fuel System Cleaner 296ml
Gumout 30001 All-in-One Fuel System Cleaner 296ml

Gumout

7.9

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10

Liqui Moly 2001 Valve Clean - 150 ml, Blue
Liqui Moly 2001 Valve Clean - 150 ml, Blue

Liqui Moly

7.7

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