TenBest

10 Best Gas Additives

Updated November 2024

Top Choice

Red Line (60103) Complete SI-1 Fuel System Cleaner Gas and Injector Additive Treatment-15

Red Line

9.9

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Sea Foam 1 Pack (16 Ounce) Extreme Marine & Rv SF-16 Seafoam Liquid

Sea Foam

9.6

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Mercury Quickare Fuel Treatment Additive - 92-8M0047320

MERCURY

9.1

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Gold Eagle 22207/1116 16 Oz Original Sta-Bil Concentrated Fuel Stabilizer

9.0

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YAMAHA ACC-RNGFR-PL-12 Yamalube Ring-Free Fuel Additive

YAMAHA

8.7

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Chevron Techron Concentrate Plus Fuel System Cleaner - 20 oz

Chevron

8.2

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Star Tron Enzyme Fuel Treatment - Regular Gas Formula 8 oz - Treats

STAR BRITE

8.0

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Techron Concentrate Plus Fuel System Cleaner, 32 oz

TECHRON

7.8

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Star Tron Enzyme Fuel Treatment - Concentrated Gas Formula 8 oz - Treats

STAR BRITE

7.6

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LUCAS LUC10013 Fuel Treatment, 1. gallons

LUCAS

7.2

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