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20 Best Fuel Additive For Mpg (2023 Updated)

Fuel additives are treatments that are added to gasoline or diesel fuel to improve the combustion process, making the engine run more efficiently and reducing emissions. The most common fuel additives are designed to increase the octane rating of gasoline, which allows the engine to run at higher compression ratios without knocking.

Other fuel additives improve the quality of the fuel by preventing the formation of deposits in the fuel injectors or by cleaning existing deposits.

20 Best Fuel Additive For Mpg

Product Image Product Name Features Price

Rislone Fuel System Treatment, Gasoline – 16.9 fl oz

  • Water remover and gas dryer
  • Octane booster and gas treatment
  • Fuel pump and injector cleaner

K100 Mg Gasoline Fuel Treatment with Stabilizers – 32 oz bottle

  • Features
  • Eliminates water and water related problems
  • Improves overall engine efficiency

Helix 700604500837 Fuel Treatment 5-in-1

  • Eliminates water from fuel systems
  • Works with 2- and 4-stroke engines
  • Revitalizes old gas

Stanadyne Diesel Fuel Additive Performance Formula 16oz

  • Restores/Increase Horsepower – detergents clean deposits in the injection system
  • Reduces Fuel Consumption–tests show an average of 4% improvement in MPG and gains up to 9.6%

Start Your Engines 21214 Fuel System Revitalizer, 2 oz

  • Additive ensures quick easy starts after extended storage, and ensures smooth idling and performance in season.
  • For all 2 and 4-cycle small engines.

Royal Purple Max Clean Fuel System Cleaner – 20 fl oz

  • Improve fuel economy an average of 3.2-percent
  • Restore horsepower an average of 2.6-percent
  • Reduce hydrocarbon, NOx and CO emissions (on average 12, 13 and 18-percent respectively)

Chevron 65740 Techron Concentrate Plus Fuel System Cleaner – 20 oz.

  • Cleans harmful deposits from fuel injectors, intake valves, combustion chambers and carburetors
  • Restores lost power and performance

VP Racing – 7-in-1 Fuel Treatment 16 oz – 2848

  • Improves vaporization and enhances combustions
  • Increases horsepower
  • Restores lost power

Sta-Bil Fuel System Stabilizer – 32 fl oz bottle

  • 32 oz

Gumout Fuel System Clean + Ethanol Treatment, All In One – 10 fl oz

  • Complete fuel system cleaner improves performance across the fuel system
  • Uses PEA (polyether amine) to effectively remove carbon deposits other products can’t

VP Racing Fuels 2805 Fuel System Cleaner 16 oz

  • Provides quick cleaning, even under severe operating conditions
  • Provides 5,000 mile protection
  • Increases fuel mileage

Gumout Regane Complete Fuel System Cleaner – 6 oz

  • Clean the entire fuel system
  • Prevent future deposit build up
  • Restore lost horsepower

ISO Heet 12 oz Fuel Additive

  • Cleans fuel injectors and carburetors
  • System-Prevents rust and corrosion
  • Absorb water from gas or diesel fuel

Archoil AR6200 (16 oz) Fuel Treatment

  • 16.Oz

AMSOIL P.I. Performance Improver Gasoline Additive – 12 oz AMSOAPICN

  • Restored power and performance
  • Improves fuel mileage an average of 2.3% and up to 5.7%
  • Reduced need for costly higher octane fuel

Dipetane 1 LTR Fuel Additive Treatment for Improve Fuel

  • Up to 10% Better Fuel Consumption.
  • Up to 25% Lower Car Emissions.
  • Protect Your Injectors Against Low Sulphur and Poorly Combusting Fuel).

Redex Diesel Fuel Treatment

  • 500 ml
Rislone Fuel System Treatment, Gasoline – 16.9 fl oz
  • Water remover and gas dryer
  • Octane booster and gas treatment
  • Fuel pump and injector cleaner
K100 Mg Gasoline Fuel Treatment with Stabilizers – 32 oz bottle
  • Features
  • Eliminates water and water related problems
  • Improves overall engine efficiency
Helix 700604500837 Fuel Treatment 5-in-1
  • Eliminates water from fuel systems
  • Works with 2- and 4-stroke engines
  • Revitalizes old gas
Stanadyne Diesel Fuel Additive Performance Formula 16oz
  • Restores/Increase Horsepower – detergents clean deposits in the injection system
  • Reduces Fuel Consumption–tests show an average of 4% improvement in MPG and gains up to 9.6%
Start Your Engines 21214 Fuel System Revitalizer, 2 oz
  • Additive ensures quick easy starts after extended storage, and ensures smooth idling and performance in season.
  • For all 2 and 4-cycle small engines.
Royal Purple Max Clean Fuel System Cleaner – 20 fl oz
  • Improve fuel economy an average of 3.2-percent
  • Restore horsepower an average of 2.6-percent
  • Reduce hydrocarbon, NOx and CO emissions (on average 12, 13 and 18-percent respectively)
Chevron 65740 Techron Concentrate Plus Fuel System Cleaner – 20 oz.
  • Cleans harmful deposits from fuel injectors, intake valves, combustion chambers and carburetors
  • Restores lost power and performance
VP Racing – 7-in-1 Fuel Treatment 16 oz – 2848
  • Improves vaporization and enhances combustions
  • Increases horsepower
  • Restores lost power
Sta-Bil Fuel System Stabilizer – 32 fl oz bottle
  • 32 oz
Gumout Fuel System Clean + Ethanol Treatment, All In One – 10 fl oz
  • Complete fuel system cleaner improves performance across the fuel system
  • Uses PEA (polyether amine) to effectively remove carbon deposits other products can’t
VP Racing Fuels 2805 Fuel System Cleaner 16 oz
  • Provides quick cleaning, even under severe operating conditions
  • Provides 5,000 mile protection
  • Increases fuel mileage
Gumout Regane Complete Fuel System Cleaner – 6 oz
  • Clean the entire fuel system
  • Prevent future deposit build up
  • Restore lost horsepower
ISO Heet 12 oz Fuel Additive
  • Cleans fuel injectors and carburetors
  • System-Prevents rust and corrosion
  • Absorb water from gas or diesel fuel
Archoil AR6200 (16 oz) Fuel Treatment
  • 16.Oz
AMSOIL P.I. Performance Improver Gasoline Additive – 12 oz AMSOAPICN
  • Restored power and performance
  • Improves fuel mileage an average of 2.3% and up to 5.7%
  • Reduced need for costly higher octane fuel
Dipetane 1 LTR Fuel Additive Treatment for Improve Fuel
  • Up to 10% Better Fuel Consumption.
  • Up to 25% Lower Car Emissions.
  • Protect Your Injectors Against Low Sulphur and Poorly Combusting Fuel).
Redex Diesel Fuel Treatment
  • 500 ml

1. Rislone Fuel System Treatment, Gasoline – 16.9 fl oz

Rislone Fuel System Treatment, Gasoline - 16.9 fl oz

  • Water remover and gas dryer
  • Octane booster and gas treatment
  • Fuel pump and injector cleaner
  • Upper cylinder lubricant
  • Valve and combustion chamber cleaner

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Amazon.com
Walmart
AutoZone
Advance Auto Parts

Product Details

Specifications

Details
Units in Package 1
Unit Size 16.9 fl oz
Directions Note: This product includes a specially designed spout which allows it to be poured into all fuel tanks, including those that use a capless (no fuel cap) system. Use anytime in a nearly full tank, or add to tank and then fill with up to 22 gallons of gas. Instructions: Bend & twist spout and tear away on the perforated tab. Remove cap and foil seal. Tightly screw spout onto bottle. (picture on side) Gently tip bottle and completely insert spout into gas tank opening, allowing entire contents to empty into tank. For continued protection and cleaning, use one bottle every 5,000 miles. Results will either be immediate or noticeable within a few days of driving.
Warnings Danger: Harmful or fatal is swallowed. Vapor harmful. Skin and eye irritant. Combustible. Read back panel carefully. Keep out of the reach children. Danger: Contains petroleum distillates. Harmful or fatal if swallowed. This product contains chemicals known to the state of California to cause cancer. Avoid skin and eye contact. Do not breathe mist or vapors. Use in well ventilated area. Keep away from heat, sparks and open flames. First Aid: If swallowed, do not induce vomiting. Call physician immediately. If inhaled, move person to fresh air. In case of eye or skin contact, flush with water for 15 minutes.

2. K100 Mg Gasoline Fuel Treatment with Stabilizers – 32 oz bottle

K100 Mg Gasoline Fuel Treatment with Stabilizers - 32 oz bottle

  • Features
  • Eliminates water and water related problems
  • Improves overall engine efficiency
  • Burns cleanly and completely with no ash deposits
  • Dissolves gums and varnishes

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Amazon.com – Seller
eBay
Walmart
Sears – Ami Ventures Inc

Product Details

Specifications

Details
Flash point 40.5
Package Dimensions 8.128 L x 25.654 H x 8.382 W (centimeters)
Assembled Product Dimensions (L x W x H) 3.25 x 3.25 x 3.25 Inches

Reviews From Real Customers

coyote560
amc31b2012
tandjmac

3. Star Tron Enzyme Fuel Additive 1 Gallon 093000N

Star Tron Enzyme Fuel Additive 1 Gallon 093000N

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Amazon.com
eBay
Walmart
West Marine

Product Details

Specifications

Details
Item Package Dimensions L x W x H 12.9 x 8.1 x 4.6 inches
Item Dimensions LxWxH 10.95 x 7.5 x 4.1 inches
Suggested Users Unisex-adult
Style 1 Gal
Included Components Additive

Reviews From Real Customers

schaefferman
rojonnzr
Philip

4. Helix 700604500837 Fuel Treatment 5-in-1

Helix 700604500837 Fuel Treatment 5-in-1

  • Eliminates water from fuel systems
  • Works with 2- and 4-stroke engines
  • Revitalizes old gas
  • Boosts octane by up to two points
  • Stabilizes fuel for up to two years

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Amazon.com – Seller
eBay
Walmart
Dennis Kirk

Product Details

Specifications

Details
Assembled Product Weight 6 lb
Assembled Product Dimensions (L x W x H) 8.00 x 8.00 x 17.00 Inches

Reviews From Real Customers

Tommy2Shoes
DARRYL
Bonnie

5. Stanadyne Diesel Fuel Additive Performance Formula 16oz

Stanadyne Diesel Fuel Additive Performance Formula 16oz

  • Restores/Increase Horsepower – detergents clean deposits in the injection system
  • Reduces Fuel Consumption–tests show an average of 4% improvement in MPG and gains up to 9.6%
  • Cetane Improver – improves combustion resulting in better engine starting, running & reduced noise
  • Reduces Wear – lubricity improvers restore lubricity to ultra low sulfur diesel fuels
  • Reduces Emissions – reduces Smoke and Particulates

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Amazon.com
eBay
Tractor Supply Company
Grainger Industrial Supply

Product Details

Specifications

Details
Flash Point (F) 142 Degrees F
Dilution Ratio Treats 60 gal
Application Diesel Fuel
Container Size 16 oz.
Appearance Liquid
Package Quantity 1
For Use With Diesel Fuel
Specific Gravity 0.92
Container Type Bottle
Country of Origin (subject to change) United States

6. Start Your Engines 21214 Fuel System Revitalizer, 2 oz

Start Your Engines 21214 Fuel System Revitalizer, 2 oz

  • Additive ensures quick easy starts after extended storage, and ensures smooth idling and performance in season.
  • For all 2 and 4-cycle small engines.
  • Revitalizes fuel and the entire fuel system.
  • Made in the U.S.A.

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Amazon.com
Walmart
Lowe’s
Tractor Supply Company

Product Details

Specifications

Details
Product Type Fuel Treatment
Brand Name Sta-Bil
Container Size 2 oz
Compatible Fuels Gasoline

Reviews From Real Customers

GrandmaT
Stymies
Member 271922690

7. Royal Purple Max Clean Fuel System Cleaner – 20 fl oz

Royal Purple Max Clean Fuel System Cleaner - 20 fl oz

  • Improve fuel economy an average of 3.2-percent
  • Restore horsepower an average of 2.6-percent
  • Reduce hydrocarbon, NOx and CO emissions (on average 12, 13 and 18-percent respectively)
  • Prevent rough idle, hesitation and stalling
  • Prevent premature spark plug fouling

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Amazon
eBay
Walmart
AutoZone

Product Details

Specifications

Details
Part Type Fuel System Additives
Fuel System Additive Type Fuel system cleaner
Scent Unscented
Gallons of Fuel Treated 20
Oxygen Sensor Safe Yes

8. Lucas Fuel Treatment, High Mileage – 5.25 fl oz

Lucas Fuel Treatment, High Mileage - 5.25 fl oz

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Amazon
eBay
Walmart
AutoZone

Product Details

Specifications

Details
Units in Package 1
Unit Size 5.25 fl oz
Directions Use frequently for best results. Add to fuel tank during refueling.
Warnings Caution: Combustible. Eye irritant. Read carefully other cautions on the side panel. Keep away from heat and flame. Use with adequate ventilation. Avoid contact with eyes. In case of eye contact, flush throughly with plenty of water for 15 minutes. Keep out of reach of children. This product contains a chemical known to the State of California to cause cancer.

9. Chevron 65740 Techron Concentrate Plus Fuel System Cleaner – 20 oz.

Chevron 65740 Techron Concentrate Plus Fuel System Cleaner - 20 oz.

  • Cleans harmful deposits from fuel injectors, intake valves, combustion chambers and carburetors
  • Restores lost power and performance
  • Relieve cold start problems
  • Minimize harmful exhaust emissions

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Amazon
eBay
Walmart
Advance Auto Parts

Product Details

Specifications

Details
Product Type Fuel treatment
Size 20 oz.
Product Weight 1.5 lb
Dimensions L x W x H (in.) 3.16 x 3.61 x 9.30 in

10. VP Racing – 7-in-1 Fuel Treatment 16 oz – 2848

VP Racing - 7-in-1 Fuel Treatment 16 oz - 2848

  • Improves vaporization and enhances combustions
  • Increases horsepower
  • Restores lost power
  • Reduces or eliminates knocking and pinging
  • Cleans fuel system

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Amazon
eBay
Tractor Supply Company
Advance Auto Parts

Product Details

Specifications

Details
Item has MSDS (SDS)? Y
Package Size 16 oz
Purpose Fuel treatment
Recommended Application Gasoline engines
Container Type Plastic bottle

11. Sta-Bil Fuel System Stabilizer – 32 fl oz bottle

Sta-Bil Fuel System Stabilizer - 32 fl oz bottle

  • 32 oz

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Amazon
Home Depot
West Marine
Ace Hardware

Product Details

Specifications

Details
Assembled Depth (in) 3.00 in
Assembled Height (in) 10.00 in
Assembled Width (in) 4.50 in
Assembled Weight (lbs) 1.92 lbs
Item has MSDS (SDS)? Y

12. Gumout Fuel System Clean + Ethanol Treatment, All In One – 10 fl oz

Gumout Fuel System Clean + Ethanol Treatment, All In One - 10 fl oz

  • Complete fuel system cleaner improves performance across the fuel system
  • Uses PEA (polyether amine) to effectively remove carbon deposits other products can’t
  • Conditions fuel to fight corrosion, extending the life of key engine parts
  • Reduces friction and wear in the upper cylinder, improving horsepower and fuel economy
  • Cleans direct and indirect fuel injectors, intake valves and ports, piston tops, cylinder heads, and combustion chamber

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Amazon
eBay
Walmart
Home Depot

Product Details

Specifications

Details
Units in Package 1
Unit Size 10 fl oz
Directions Add entire bottle to nearly empty gasoline tank at time of oil change. Refill tank with up to 35 gallons of gasoline. Do not refill tank until near empty. Repeat every 3000 miles at time of oil change. This product will not harm catalytic converters or oxygen sensors. Can be used with all unleaded, oxygenated and reformulated gasoline as well as other Gumout fuel additives.
Warnings Danger: Combustible. Harmful or fatal if swallowed. Skin and eye irritant. Vapors may cause drowsiness and dizziness. Read carefully other cautions on back. Danger: Contains petrolatum distillates and amines. May cause allergic skin reaction. Health Hazard Warning: A component of this material may cause cancer. Risk to your health depends on level and duration of exposure. Precautionary Measures: Keep away from heat and flames. Avoid breathing of mists and vapors. Use only in well ventilated areas. Keep container closed. Avoid skin and eye contact. Do not swallow. Wash thoroughly after handling. First Aid: If swallowed, do not induce vomiting. Call physician immediately. If inhaled, breathe fresh air. For skin or eye contact, wash thoroughly with water. This product contains a chemical(s) known to the State of California to cause cancer. Keep out of reach of children. For health emergency: 1-877-504-9352.

13. VP Racing Fuels 2805 Fuel System Cleaner 16 oz

VP Racing Fuels 2805 Fuel System Cleaner 16 oz

  • Provides quick cleaning, even under severe operating conditions
  • Provides 5,000 mile protection
  • Increases fuel mileage
  • Cleans pistons, rings, valves and restores performance
  • Virtually eliminates knocking and pinging Powered by Frooition

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Amazon
eBay
Advance Auto Parts
Valu Home Centers

Product Details

Specifications

Details
Item has MSDS (SDS)? Y
Packaging Depth 2.75 IN
Packaging Height 8.5 IN
Packaging Width 2.75 IN
Package Weight 1.06

Reviews From Real Customers

Paul G
tunerjoe
Duke Boy

14. Gumout Regane Complete Fuel System Cleaner – 6 oz

Gumout Regane Complete Fuel System Cleaner - 6 oz

  • Clean the entire fuel system
  • Prevent future deposit build up
  • Restore lost horsepower
  • Remove water from gaoline

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Ace Hardware

Product Details

Specifications

Details
Units in Package 1
Unit Size 6 fl oz
Directions Add entire bottle to nearly empty gasoline tank, then fill tank with up to 21 gallons of gasoline. For best results, do not refill tank until near empty. This product will not harm catalytic converters or oxygen sensors. Can be used with all unleaded, oxygenated and reformulated gasolines. Safe to use with other Gumout fuel additives. Works in standard, capless & obstructed gas tanks. Pour, twist & remove. Use Every 3,000 Miles: Treats up to 21 gallons (80 lt) of gasoline.
Warnings Danger: Combustible. Harmful or fatal if swallowed. Skin and eye irritant. Vapors may cause drowsiness and dizziness. Read carefully other cautions on back panel. Contains petroleum distillates and amines. May cause allergic skin reaction. Health Hazard Warning: A component of this material may cause cancer. Risk to your health depends on level and duration of exposure. Precautionary Measures: Keep away from heat and flames. Avoid breathing of mists and vapors. Use only in well ventilated areas. Keep container closed. Avoid skin and eye contact. Do not swallow. Wash thoroughly after handling. First Aid: If swallowed, do not induce vomiting. Call physician immediately. If inhaled, breathe fresh air. For skin or eye contact, wash thoroughly with water. Warning: This product contains a chemical(s) known to the State of California to cause cancer. Keep out of reach of children. For Health Emergency: 1-877-504-9352.

15. (6 Pack) Royal Purple Max Clean Fuel System Cleaner, 20 oz

(6 Pack) Royal Purple Max Clean Fuel System Cleaner, 20 oz

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Amazon
eBay – ldtactical
Alligator Performance

Product Details

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greystone1._-0
koolstuffbyme
ss62409count

16. ISO Heet 12 oz Fuel Additive

ISO Heet 12 oz Fuel Additive

  • Cleans fuel injectors and carburetors
  • System-Prevents rust and corrosion
  • Absorb water from gas or diesel fuel

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Amazon
Frankfort Hardware
MechanicSurplus.com

Product Details

Specifications

Details
Assembled Product Weight 0.12 lbs

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Carl S.
Pedro
Burd

17. Archoil AR6200 (16 oz) Fuel Treatment

Archoil AR6200 (16 oz) Fuel Treatment

  • 16.Oz

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Amazon
eBay – fixurtruck
Archoil
KT Performance

Product Details

Specifications

Details
Assembled Product Weight 10 lb
Assembled Product Dimensions (L x W x H) 5.00 x 5.00 x 5.00 Inches

Reviews From Real Customers

Michael Wilson
mveroniqueg
erlachplatz5

18. AMSOIL P.I. Performance Improver Gasoline Additive – 12 oz AMSOAPICN

AMSOIL P.I. Performance Improver Gasoline Additive - 12 oz AMSOAPICN

  • Restored power and performance
  • Improves fuel mileage an average of 2.3% and up to 5.7%
  • Reduced need for costly higher octane fuel
  • Nitrous Oxides (NOx) up to 17%
  • Better drivability

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AMSOIL

Product Details

Specifications

Details
Product Dimensions 3.15 x 3.54 x 8.66 inches
Country of Origin USA

Reviews From Real Customers

RICH

19. Dipetane 1 LTR Fuel Additive Treatment for Improve Fuel

Dipetane 1 LTR Fuel Additive Treatment for Improve Fuel

  • Up to 10% Better Fuel Consumption.
  • Up to 25% Lower Car Emissions.
  • Protect Your Injectors Against Low Sulphur and Poorly Combusting Fuel).
  • Reduces Greenhouse Gas Emissions by up to 25%.
  • No detergents, no cetane enhancers, no octane boosters, and no heavy metals.

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yourspares.co.uk

Product Details

Specifications

Details
Length 310
Thickness 550

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HywelW
Barryjetta2Ltdisport
Smokeless Coal

20. Redex Diesel Fuel Treatment

Redex Diesel Fuel Treatment

  • 500 ml

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MicksGarage.com

Product Details

Specifications

Details
Dimensions 5.00cm x 8.70cm x 25.20cm

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bidsmithy
trevor9158

Conclusion

Based on the evidence, it is clear that fuel additives can improve MPG. However, it is important to keep in mind that there are many variables that can affect MPG, so it is important to find the right fuel additive for your vehicle.

There are many different fuel additives on the market, so it is important to do your research before purchasing one. It is also important to follow the directions on the fuel additive bottle, as using too much or too little can negatively affect your MPG.

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