10 bestEngine Additivesof January 2026
112M consumers helped this year.
1

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

9.9
2

Lucas 10013 Fuel Treatment - 1 Gallon
Lucas Oil

9.8
3

New BG 44K Platinum, EPR, MOA
BG(0002698761)

9.6
4

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

9.3
5

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

9.0
OtherUp to 9% off
6

Liqui Moly 2020 Motor Oil Saver - 300 ml
Liqui Moly

8.8
13% off
7

3 cans of BG EPR Engine Performance Restoration
BG(0002698761)

8.5
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

8.2
9

Bg Products MOA & EPR Motor Oil Additive Lubrication Supplement Engine Restore
BG(0002698761)

8.0
10

Liqui Moly 20004 Hydraulic Lifter Additive
Liqui Moly

7.7
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