10 Best Gas Additives

After analyzing 576 products, scanning 690 reviews, spending more than 36 hours of research and speaking with our test users, we think the Chevron Techron Concentrate Plus Fuel System Cleaner is the one of the Best Gas Additive on the market.

# Image Name Brand Price
1
⭐Best Choice
Chevron Techron Concentrate Plus Fuel System Cleaner
Chevron Techron Concentrate Plus Fuel System Cleaner - 20 oz. Check price Chevron $$$$$ Check price
2
👑Premium Pick
LUCAS LUC10013 1 Gallon (128 Ounces) Fuel Treatment
LUCAS LUC10013 1 Gallon (128 Ounces) Fuel Treatment Check price LUCAS $$$$$ Check price
3 STA-BIL 22207 16 Fl. oz. Gold Eagle 22207/1116 16 Oz STA-BIL 22207 16 Fl. oz. Gold Eagle 22207/1116 16 Oz Original Concentrated Fuel Stabilizer Check price STA-BIL $$$$$ Check price
4 Star Tron Enzyme Fuel Treatment Star Tron Enzyme Fuel Treatment - Concentrated Gas Formula 8 oz - Treats 128 Gallons Check price Star Brite $$$$$ Check price
5 STA-BIL 22275 32 Ounces Ethanol Treatment STA-BIL 22275 32 Ounces Ethanol Treatment Check price STA-BIL $$$$$ Check price
6
💲Best value for the money
Star Tron Enzyme Fuel Treatment
Star Tron Enzyme Fuel Treatment - Regular Gas Formula 8 oz - Treats 48 Gallons Check price Star Brite $$$$$ Check price
7 Techron Concentrate Plus Fuel System Cleaner Techron Concentrate Plus Fuel System Cleaner, 32 oz Check price TECHRON $$$$$ Check price
8 Sea Foam SF-16-2PK Motor Treatment Multi-Use Sea Foam SF-16-2PK Motor Treatment Multi-Use, 16 Ounce, Pack of 2, 16. Fluid_Ounces Check price Sea Foam $$$$$ Check price
9 Red Line RED60103 15 Ounce Complete Si-1 Fuel System Cleaner Red Line RED60103 15 Ounce Complete Si-1 Fuel System Cleaner Check price Red Line $$$$$ Check price
10 Sea Foam 1 Pack (16 Ounce) Extreme Marine & Rv Sea Foam 1 Pack (16 Ounce) Extreme Marine & Rv SF-16 Seafoam Liquid 16 Fl Oz Check price Sea Foam $$$$$ Check price

Chevron Techron Concentrate Plus Fuel System Cleaner – Best Overall Gas Additive

Chevron Techron Concentrate Plus Fuel System Cleaner
  • Cleans, restores, protects the entire fuel system (fuel injectors, carburetors, intake valves and combustion chambers)
  • Restores: lost power, acceleration, lost fuel economy, and operation of the fuel gauge sensor
  • Reduces: rough idle, engine surge, hesitation, and spark plus fouling
  • Improves: cold start performance, and fuel stability for up to one year
  • Automobiles and trucks use every 3,000 miles or at your next oil change. All other gasoline engines use as needed (motorcycles, dirt bikes, boats, ATVs, RVs, water craft, lawn care, etc.)

LUCAS LUC10013 1 Gallon (128 Ounces) Fuel Treatment – Premium Pick

LUCAS LUC10013 1 Gallon (128 Ounces) Fuel Treatment
  • Cleans and lubricates the fuel system. Neutralizes low sulfur fuel problems
  • Increases power and miles per gallon by burning excess exhaust emissions
  • Made in USA
  • Increases the life of pumps and injectors

STA-BIL 22207 16 Fl. oz. Gold Eagle 22207/1116 16 Oz

STA-BIL 22207 16 Fl. oz. Gold Eagle 22207/1116 16 Oz
  • Keeps fuel fresh for up to 24 months during storage
  • Eliminates need to drain fuel prior to storage
  • Ensures quick, easy starts after storage
  • Effective in all gasoline, including ethanol blends
  • For all gasoline engines, including 2-cycle

Star Tron Enzyme Fuel Treatment

Star Tron Enzyme Fuel Treatment
  • Cures and prevents ethanol fuel problems; helps prevent phase separation
  • For everyday use and seasonal storage; stabilizes fuel for up to 2 years and can help rejuvenate old, sub-spec fuel
  • Makes engines start easily and run smoothly; improves fuel economy and reduces emissions
  • Cleans valves and injectors of carbon deposits, gums and varnish for maximum performance, increased fuel efficiency and reduced emissions
  • Concentrated formula #930XX is economical to use in large and small applications; safe for use in all engines (including 2-cycle pre-mix)

STA-BIL 22275 32 Ounces Ethanol Treatment

STA-BIL 22275 32 Ounces Ethanol Treatment
  • America's #1 Ethanol Treatment - Helps prevent Ethanol fuel related damage in vehicles and small engines
  • Prevents corrosion caused by ethanol blended fuels
  • Increases engine power and efficiency
  • Effective in ethanol and non-ethanol blended fuels
  • Keeps fuel fresh for up to 12 months
  • Made in the U.S.A.

Star Tron Enzyme Fuel Treatment – Best Budget Gas Additive

Star Tron Enzyme Fuel Treatment
  • Cures and prevents ethanol fuel problems
  • Helps prevent phase separation
  • Makes engines start easily, run smooth
  • Stabilizes gasoline for up to 2 years
  • This item is not for sale in Catalina Island

Techron Concentrate Plus Fuel System Cleaner

Techron Concentrate Plus Fuel System Cleaner
  • Cleans, restores, protects the entire fuel system (fuel injectors, carburetors, intake valves and combustion chambers)
  • Restores: lost power, acceleration, lost fuel economy, and operation of the fuel gauge sensor
  • Reduces: rough idle, engine surge, hesitation, and spark plus fouling
  • Improves: cold start performance, and fuel stability for up to one year
  • Automobiles and trucks use every 3, 000 miles or at your next oil change. All other gasoline engines use as needed (motorcycles, dirt bikes, boats, ATVs, RVs, water craft, lawn care, etc.)

Sea Foam SF-16-2PK Motor Treatment Multi-Use

Sea Foam SF-16-2PK Motor Treatment Multi-Use
  • Dissolves and clean fuel deposits and sticky residues from gas and diesel fuel injectors, carburetors, and combustion chambers
  • Stabilizes stored fuel for up to two year
  • Does NOT have harsh detergent or abrasive chemicals that can harm your engine

Red Line RED60103 15 Ounce Complete Si-1 Fuel System Cleaner

Red Line RED60103 15 Ounce Complete Si-1 Fuel System Cleaner
  • DESIGNED TO EXCEED EXPECTATIONS - Red Line Complete SI-1 Fuel System Cleaner treatment for cleaning & preventing corrosion in fuel systems
  • PERFORM & PROTECT - Fuel additive cleans injectors, carburetors, valve & combustion chamber deposits with a powerful concentrated blend of high-temp and low-temp detergents
  • EFFICIENT FUEL BURN - Gas treatment that enhances gasoline stability, while reducing the buildup of gum and varnish formation
  • EASY TO USE - Use one bottle per tank for most effective treatment, additive cleans nearly 100% efficiency in one treatment
  • WHY RED LINE - Established in 1979, Red Line Products perform & protect better than any on the market. No compromises

Sea Foam 1 Pack (16 Ounce) Extreme Marine & Rv

Sea Foam 1 Pack (16 Ounce) Extreme Marine & Rv
  • Cleans injectors, carb jets and passageways
  • Cleans and lubricates intake valves, pistons and cylinders
  • Dissolves and cleans fuel residue in fuel systems
  • Dissolves oil deposits in crankcase
  • Clean timing chain tensioners and VVT actuators, quiet noisy lifters
  • 100 percent pure petroleum
  • EPA registered product
  • Liquefies gum and varnish deposits or internal engine contaminants
  • Special Shipping Information: This item cannot be returned and has additional shipping restrictions
  • Special Shipping Information: This item cannot be returned and has additional shipping restrictions

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