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20 Best Fuel Additive For Horsepower (2023 Updated)

Fuel additives are designed to improve the performance of your engine by increasing power and efficiency. There are a variety of fuel additives on the market, each with its own set of benefits. However, not all fuel additives are created equal.

Some fuel additives may actually do more harm than good to your engine. When choosing a fuel additive, it is important to do your research to ensure that you are choosing a product that will actually improve the performance of your engine.

20 Best Fuel Additive For Horsepower

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

Hot Shot's Secret Diesel Extreme 1 qt P040432Z

  • Fuel system cleaner for diesel cleans injector tips, cylinders, fuel lines and tank and dispenses moisture
  • Boosts cetane up to 7 PTS to provide maximum performance while cleaning your diesel’s fuel system

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.

Star Tron Fuel Treatment, Enzyme – 8 us fl oz (237 ml)

  • Cures and prevents ethanol fuel problems; helps prevent phase separation
  • Makes engines start easily and run smoothly; reduces emissions

Klotz KL-600 Nitro Power Additive 16oz

  • Oxygenating power additive.
  • Developed for gasoline, methanol and diesel fuels.
  • 50% Nitropropane, 50% Koolinal.

Torco Unleaded Accelerator, Octane Booster – 32 fl oz bottle

  • Can raise the Octane of your fuel as high as 105
  • You can customize your blend to fit your needs
  • Won’t harm sensitive O2 sensors or catalytic converters

STP Fuel System Cleaner

  • Save gas by keeping fuel intake system clean
  • Restore performance
  • Remove deposits

Lucas Octane Booster Fuel Additive – 15 oz bottle

  • Suitable for use in fuel injected and carbureted engines
  • Provides more boost than most other brands
  • Promotes clean fuel burn for fewer emissions

Helix 700604500837 Fuel Treatment 5-in-1

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

Sta-Bil Fuel System Stabilizer – 32 fl oz bottle

  • 32 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)

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

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

Lucas Upper Cylinder Lubricant with Injector Cleaners and Fuel Conditioners – 128 oz jug

  • Lubricates rings and cylinder walls for longer life
  • It causes more combustion for more power and higher fuel mileage with fewer emissions

BG 44K Fuel System Cleaner Power Enhancer (Qty 1) 11oz Can per 20 Gallons

  • BG Platinum 44K Fuel System Cleaner
  • Made in the USA
  • BG Platinum 44K

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
Hot Shot's Secret Diesel Extreme 1 qt P040432Z
  • Fuel system cleaner for diesel cleans injector tips, cylinders, fuel lines and tank and dispenses moisture
  • Boosts cetane up to 7 PTS to provide maximum performance while cleaning your diesel’s fuel system
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.
Star Tron Fuel Treatment, Enzyme – 8 us fl oz (237 ml)
  • Cures and prevents ethanol fuel problems; helps prevent phase separation
  • Makes engines start easily and run smoothly; reduces emissions
Klotz KL-600 Nitro Power Additive 16oz
  • Oxygenating power additive.
  • Developed for gasoline, methanol and diesel fuels.
  • 50% Nitropropane, 50% Koolinal.
Torco Unleaded Accelerator, Octane Booster – 32 fl oz bottle
  • Can raise the Octane of your fuel as high as 105
  • You can customize your blend to fit your needs
  • Won’t harm sensitive O2 sensors or catalytic converters
STP Fuel System Cleaner
  • Save gas by keeping fuel intake system clean
  • Restore performance
  • Remove deposits
Lucas Octane Booster Fuel Additive – 15 oz bottle
  • Suitable for use in fuel injected and carbureted engines
  • Provides more boost than most other brands
  • Promotes clean fuel burn for fewer emissions
Helix 700604500837 Fuel Treatment 5-in-1
  • Eliminates water from fuel systems
  • Works with 2- and 4-stroke engines
  • Revitalizes old gas
Sta-Bil Fuel System Stabilizer – 32 fl oz bottle
  • 32 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)
VP Racing – 7-in-1 Fuel Treatment 16 oz – 2848
  • Improves vaporization and enhances combustions
  • Increases horsepower
  • Restores lost power
Lucas Upper Cylinder Lubricant with Injector Cleaners and Fuel Conditioners – 128 oz jug
  • Lubricates rings and cylinder walls for longer life
  • It causes more combustion for more power and higher fuel mileage with fewer emissions
BG 44K Fuel System Cleaner Power Enhancer (Qty 1) 11oz Can per 20 Gallons
  • BG Platinum 44K Fuel System Cleaner
  • Made in the USA
  • BG Platinum 44K
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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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. Hot Shot’s Secret Diesel Extreme 1 qt P040432Z

Hot Shot's Secret Diesel Extreme 1 qt P040432Z

  • Fuel system cleaner for diesel cleans injector tips, cylinders, fuel lines and tank and dispenses moisture
  • Boosts cetane up to 7 PTS to provide maximum performance while cleaning your diesel’s fuel system
  • Restores throttle and contains the most concentrated detergent formula on the market
  • Fuel system cleaner improves cold starting and effectively eliminates black smoke
  • Increases fuel mileage and enhances lubricity

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Amazon.com
eBay
Walmart
Tractor Supply Company

Product Details

Specifications

Details
Fuel Additive Type System Cleaner
Fuel Additive Size 32 oz

Reviews From Real Customers

DC10Drvr
Stento
Cjames

3. 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

4. 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

PRM1

5. Star Tron Fuel Treatment, Enzyme – 8 us fl oz (237 ml)

Star Tron Fuel Treatment, Enzyme - 8 us fl oz (237 ml)

  • Cures and prevents ethanol fuel problems; helps prevent phase separation
  • Makes engines start easily and run smoothly; reduces emissions
  • Cleans valves

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Amazon.com
eBay
Walmart
Home Depot

Product Details

Specifications

Details
Units in Package 1
Unit Size 8 oz
Directions Always add Star Tron just before each fuel fill up. Remove cap and pour the prescribed amount into tank. Overdosing is not harmful. Initial dosage: Add 1 fl oz. For every 3 gallons of gasoline. Refills: Add 1 fl. oz. For every 6 gallons of gasoline.
Warnings Danger. Harmful or fatal if swallowed. See back for precautions and first aid. Danger Harmful or fatal if swallowed. Contains Petroleum distillates, hydrotreated light. Do not swallow. Do not breathe vapors. Use in a well ventilated area. Avoid skin contact. Keep away from heat, open flame and sparks. Keep out of reach of children. First Aid: it swallowed or inhaled, call physician, emergency room or Poison Control center immediately for advice about whether or not to induce vomiting. If product comes in contact with skin or eyes, flush with clean water for at least 15 minutes. If irritation persists, seek medical attention.

6. Klotz KL-600 Nitro Power Additive 16oz

Klotz KL-600 Nitro Power Additive 16oz

  • Oxygenating power additive.
  • Developed for gasoline, methanol and diesel fuels.
  • 50% Nitropropane, 50% Koolinal.
  • Nitro Power Additive by Klotz. Developed for gasoline, methanol, and diesel fuels.

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Amazon.com
eBay
rockymountainatvmc.com
Autoplicity.com

Product Details

Specifications

Details
Product Dimensions 7.5 x 2.75 x 2.75 inches
Country of Origin USA
Is Discontinued By Manufacturer No
Exterior Painted

Reviews From Real Customers

Jake
Bryant
foehmr0024

7. Torco Unleaded Accelerator, Octane Booster – 32 fl oz bottle

Torco Unleaded Accelerator, Octane Booster -  32 fl oz bottle

  • Can raise the Octane of your fuel as high as 105
  • You can customize your blend to fit your needs
  • Won’t harm sensitive O2 sensors or catalytic converters
  • Available in convenient 32 oz

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Amazon.com – Seller
eBay
Walmart
hyperfuels.com

Product Details

Specifications

Details
Weight 1.7 lb

Reviews From Real Customers

RUSSELL
BRIAN
STEVE

8. STP Fuel System Cleaner

STP Fuel System Cleaner

  • Save gas by keeping fuel intake system clean
  • Restore performance
  • Remove deposits
  • Inhibit corrosion
  • This product is compatible with capless gas systems

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Amazon.com
NAPA Auto Parts

Product Details

Specifications

Details
Package Dimensions 7.99 x 4.02 x 1.73 inches
Country of Origin USA

9. Lucas Octane Booster Fuel Additive – 15 oz bottle

Lucas Octane Booster Fuel Additive - 15 oz bottle

  • Suitable for use in fuel injected and carbureted engines
  • Provides more boost than most other brands
  • Promotes clean fuel burn for fewer emissions

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Walmart
AutoZone
Lowe’s

Product Details

Specifications

Details
Units in Package 1
Unit Size 15 fl oz
Directions Pour entire bottle into tank then fill with any grade gasoline. Use with each fill-up for maximum fuel mileage.
Warnings Contains Petroleum distillate Methyl Cyclo Pentadenyl (MMT) plus other performance enhancers. Do not use near spark or flames. Use only in a well ventilated area. Can permanently stain surface. Keep away from eyes and skin. If swallowed, Do Not induce vomiting. Call physician immediately. Avoid exposing product to direct sunlight. This product contains chemicals known to the state of California to cause cancer, birth defects and other reproduction harm. Keep out of reach of children. Harmful or fatal if swallowed.

10. 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

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. 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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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

13. 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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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

14. Lucas Upper Cylinder Lubricant with Injector Cleaners and Fuel Conditioners – 128 oz jug

Lucas Upper Cylinder Lubricant with Injector Cleaners and Fuel Conditioners - 128 oz jug

  • Lubricates rings and cylinder walls for longer life
  • It causes more combustion for more power and higher fuel mileage with fewer emissions
  • Harmless to

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Walmart
AutoZone
Tractor Supply Company

Product Details

Specifications

Details
Product Type Fuel treatment
Size 1 gal.
Product Weight 7.6 lb
Dimensions L x W x H (in.) 6 x 6 x 12

15. BG 44K Fuel System Cleaner Power Enhancer (Qty 1) 11oz Can per 20 Gallons

BG 44K Fuel System Cleaner Power Enhancer (Qty 1) 11oz Can per 20 Gallons

  • BG Platinum 44K Fuel System Cleaner
  • Made in the USA
  • BG Platinum 44K
  • Restores performance
  • Restores fuel efficiency

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Walmart – Astech
USP Motorsports

Product Details

Specifications

Details
Assembled Product Weight 1 lbs
Assembled Product Dimensions (L x W x H) 3.00 x 3.00 x 5.00 Inches

Reviews From Real Customers

pehawk1950
jlm121062
jeflo-5214

16. (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

Reviews From Real Customers

maslom_19
wesomaabdu

17. Sta-Bil Fuel Stabilizer – 1 gal jug

Sta-Bil Fuel Stabilizer - 1 gal jug

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Walmart
Home Depot

Product Details

Specifications

Details
Item has MSDS (SDS)? Y
Packaging Depth 7.13 IN
Packaging Height 10.13 IN
Packaging Width 4.44 IN
Package Weight 7.15
Package Weight UOM LB
Net Packaged Quantity 1 GA
Package Size 128 oz
Purpose Prevent gum, varnish and corrosion of fuel
Recommended Application Fuel
Container Type Plastic bottle
Flash Point 185 °F
Amount Of Fuel Treated 320 gal
Oxygen Sensor Safe Yes

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

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

Reviews From Real Customers

69hedley69
kaf0104

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

Conclusion

The fuel additive did increase horsepower as advertised. I noticed a significant difference in my car’s performance after using the additive. My car had more pep and seemed to accelerate faster. I’m definitely happy with the results and would recommend this additive to anyone looking to increase their car’s horsepower.

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