10 bestFuel Additivesof April 2026
112M consumers helped this year.
1
Red Line (60103) Complete SI-1 Fuel System Cleaner - 15 Ounce
Red Line
9.8
2
Lucas 10013 Fuel Treatment - 1 Gallon
Lucas Oil
9.6
3
Klotz Higher Octane Booster, Multipurpose Fuel Additive for Gasoline – 4 Pack of 6-Ounce Bottles
Klotz
9.3
15% off
4
Gumout 30001 All-in-One Fuel System Cleaner 296ml
Gumout
9.0
5
Royal Purple 11722 Max-Clean Fuel System Cleaner and Stabilizer, 20-Ounce Bottle
Royal Purple
8.8
6% off
6
BG 44K Fuel System Cleaner
BG(0002698761)
8.5
5% off
7
STP 78574-12PK Octane Booster - 5.25 fl. oz., (Pack of 12)
STP
8.2
8
2 Pack Bg 44k Fuel System Cleaner Power Enhancer 11 Oz Cans
BG(0002698761)
7.9
9
Fuel Treatment/1x1/Quart
Lucas Oil
7.6
10
Liqui Moly 2001 Valve Clean - 150 ml, Blue
Liqui Moly
7.3
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