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20 Best Fuel Additives For Cars (2023 Updated)

Fuel additives are chemicals that are added to a fuel to improve its properties. The most common fuel additives are used to improve the octane rating of gasoline, to prevent engine knock, and to improve the stability of the fuel.

20 Best Fuel Additives For Cars

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

Techron High Mileage Fuel System Cleaner 12oz

  • 1 oz

STP Fuel System Cleaner

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

STP Fuel Injector Cleaner, Super Concentrated – 5.25 fl oz

  • High quality carrier of active ingredients
  • Use at every oil change or after 6500 kms and 1 bottle treats 105 litres of fuel

Stanadyne Performance Formula Diesel Fuel Additive – 16 oz STAN38565

  • Reduces Fuel Consumption tests show an average of 4 percent improvement in MPG and gains up to 9.6 Percent.
  • Reduces Wear: Lubricity improvers restore lubricity to ultra low sulfur diesel fuels.

Gold Eagle 22264 Sta-Bil Ethanol Gas Treatment – 10 oz

  • Vapor technology protects engine and fuel system above and below the fuel line
  • Helps prevent Ethanol fuel related damage in vehicles and small engines

Sta-Bil Fuel System Stabilizer – 32 fl oz bottle

  • 32 oz

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

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

Gumout Regane Complete Fuel System Cleaner – 6 oz

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

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

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

STP Super Concentrated Fuel Injector Cleaner – 12 fl oz bottle

  • High quality carrier of active ingredients
  • Use at every oil change or after 6500 kms and 1 bottle treats 105 litres of fuel

Red Line (60103) Complete SI-1 Fuel System Cleaner – 15 Ounce

  • Contains synthetic upper cylinder lubricant
  • Suitable for use with oxygenated fuel
  • Attractive pricing

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

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

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
Techron High Mileage Fuel System Cleaner 12oz
  • 1 oz
STP Fuel System Cleaner
  • Save gas by keeping fuel intake system clean
  • Restore performance
  • Remove deposits
STP Fuel Injector Cleaner, Super Concentrated – 5.25 fl oz
  • High quality carrier of active ingredients
  • Use at every oil change or after 6500 kms and 1 bottle treats 105 litres of fuel
Stanadyne Performance Formula Diesel Fuel Additive – 16 oz STAN38565
  • Reduces Fuel Consumption tests show an average of 4 percent improvement in MPG and gains up to 9.6 Percent.
  • Reduces Wear: Lubricity improvers restore lubricity to ultra low sulfur diesel fuels.
Gold Eagle 22264 Sta-Bil Ethanol Gas Treatment – 10 oz
  • Vapor technology protects engine and fuel system above and below the fuel line
  • Helps prevent Ethanol fuel related damage in vehicles and small engines
Sta-Bil Fuel System Stabilizer – 32 fl oz bottle
  • 32 oz
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
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
Gumout Regane Complete Fuel System Cleaner – 6 oz
  • Clean the entire fuel system
  • Prevent future deposit build up
  • Restore lost horsepower
VP Racing – 7-in-1 Fuel Treatment 16 oz – 2848
  • Improves vaporization and enhances combustions
  • Increases horsepower
  • Restores lost power
STP Super Concentrated Fuel Injector Cleaner – 12 fl oz bottle
  • High quality carrier of active ingredients
  • Use at every oil change or after 6500 kms and 1 bottle treats 105 litres of fuel
Red Line (60103) Complete SI-1 Fuel System Cleaner – 15 Ounce
  • Contains synthetic upper cylinder lubricant
  • Suitable for use with oxygenated fuel
  • Attractive pricing
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
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
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.

Reviews From Real Customers

Pappa Nicky
sugarlick74
JohnRP

2. Techron High Mileage Fuel System Cleaner 12oz

Techron High Mileage Fuel System Cleaner 12oz

  • 1 oz

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Walmart
AutoZone
NAPA Auto Parts

Product Details

Specifications

Details
Product Dimensions 3.16 x 2.66 x 8.9 inches
Country of Origin USA

Reviews From Real Customers

occdoc2022
Benjamin Enyart
J.S.

3. 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

Reviews From Real Customers

Desmond
Chuck
TC

4. STP Fuel Injector Cleaner, Super Concentrated – 5.25 fl oz

STP Fuel Injector Cleaner, Super Concentrated - 5.25 fl oz

  • High quality carrier of active ingredients
  • Use at every oil change or after 6500 kms and 1 bottle treats 105 litres of fuel
  • Restores lost power and removes deposits
  • Stp super concentrated fuel injector cleaner is safe for any gasoline

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Amazon.com – Seller
Walmart
Valu Home Centers
Dwyer Bros

Product Details

Specifications

Details
Units in Package 1
Unit Size 5.25 fl oz
Directions Pour entire contents into gas tank before or after fueling. One bottle treats up to 21 gallons of gasoline.
Warnings Danger: Eye & skin irritant. Read back panel carefully. Reproductive Harm – www.P65Warnings.ca.gov. Danger: Keep out of reach of children. Harmful or fatal if swallowed. Combustible. May cause eye and skin irritation. Do not swallow. Avoid eye and skin contact. Do not breathe vapors. Use in well-ventilated areas away from heat sources, sparks and flames. First Aid: If swallowed – Do not induce vomiting. Immediately call a doctor or poison control center. Eyes – Rinse with water for 15 minutes. If irritation persists, call a doctor. Skin – Wash with soap and water. If vapors bother you – Move to fresh air. Contains: petroleum distillates.

Reviews From Real Customers

GlennB
Artewa
nalba

5. Stanadyne Performance Formula Diesel Fuel Additive – 16 oz STAN38565

Stanadyne Performance Formula Diesel Fuel Additive - 16 oz STAN38565

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

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Amazon.com – Seller
eBay
Xtreme Diesel Performance
Rural King

Product Details

Specifications

Details
Product Dimensions 11 x 9 x 10 inches
Is Discontinued By Manufacturer No

Reviews From Real Customers

cabooose1
zumoking
Str8narrow

6. Gold Eagle 22264 Sta-Bil Ethanol Gas Treatment – 10 oz

Gold Eagle 22264 Sta-Bil Ethanol Gas Treatment - 10 oz

  • Vapor technology protects engine and fuel system above and below the fuel line
  • Helps prevent Ethanol fuel related damage in vehicles and small engines
  • Helps prevent corrosion damage and helps remove water
  • Stabilizes fuel to keep it fresh during storage
  • Helps clean fuel system for improved in-season performance

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Walmart
Lowe’s

Product Details

Specifications

Details
Units in Package 1
Unit Size 10 fl oz
Directions Usage Directions: 1 oz. (30 ml) treats 5 gallons (19 l) of fuel. Recommended for use at every fill up in season for year round performance & protection.
Warnings Cancer & reproductive harm – www.P65Warnings.ca.gov. Danger: Harmful or fatal if swallowed. Combustible. Read cautions on back panel. Contains: Petroleum distillates (CAS no. 64742-47-8). If swallowed do not induce vomiting. Call physician immediately. Use in well ventilated area. Avoid contact with eyes or skin. Combustible: Do not use near fire, flame or source of ignition. Keep out of reach of children.

7. 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

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

Lucas Fuel Treatment, High Mileage - 5.25 fl oz

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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.

Reviews From Real Customers

bobk100
dede6677

9. 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

Reviews From Real Customers

gracer1
ggbid1
Chris H.

10. 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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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.

11. 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.

Reviews From Real Customers

EngineerHeaded

12. Sta-Bil Fuel Stabilizer – 1 gal jug

Sta-Bil Fuel Stabilizer - 1 gal jug

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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

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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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

Reviews From Real Customers

Al
Clinton

14. STP Super Concentrated Fuel Injector Cleaner – 12 fl oz bottle

STP Super Concentrated Fuel Injector Cleaner -  12 fl oz bottle

  • High quality carrier of active ingredients
  • Use at every oil change or after 6500 kms and 1 bottle treats 105 litres of fuel
  • Restores lost power and removes deposits
  • Saves petrol by cleaning dirty fuel injectors

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eBay – invictuswarehousedeals
Tractor Supply Company
AutoZone

Product Details

Specifications

Details
Units in Package 1
Unit Size 12 fl oz
Directions Pour entire contents into full gas tank. Firmly replace cap on empty bottle and discard in trash or recycle. For tanks up to 21 gallons. May be used in combination with other STP fuel additives.
Warnings Harmful or fatal is swallowed. Combustible. May cause skin and eye irritation. Contains petrolatum distillates. Do not swallow. Do not breathe vapors. Use in well-ventilated areas away from heat sources, sparks, or flames. Avoid eye contact and prolonged skin contact. First Aid: If Swallowed: Do not induce vomiting. Immediately call a physician or Poison Control Center. If Vapors Bother You: Move to fresh air. Skin: Wash with soap and water. Eyes: Flush with water for 15 minutes. Contact a physician if irritation persists. Keep out of reach of children.

Reviews From Real Customers

kevin
Glenda
Melanie

15. Red Line (60103) Complete SI-1 Fuel System Cleaner – 15 Ounce

Red Line (60103) Complete SI-1 Fuel System Cleaner - 15 Ounce

  • Contains synthetic upper cylinder lubricant
  • Suitable for use with oxygenated fuel
  • Attractive pricing
  • Reliable performance

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Amazon
IPD

Product Details

Specifications

Details
Compatibility Injectors/ Carburetors/ Valves/ Combustion Chamber
Unit Size 15 Ounce
Unit Type Bottle
Unit Quantity Single

Reviews From Real Customers

Teetertoter
blazer188
Meticulous motorist

16. 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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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

Reviews From Real Customers

Ahmo
Pathfinder

17. 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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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

Reviews From Real Customers

Scotty
Garey

18. Super Tech Fuel Additive

Super Tech Fuel Additive

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Walmart

Product Details

19. 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

hunternicholas
JAIME
HARRISON

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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pinkychukkles
WhiteHorseGuy
mikcooper-holli0

Conclusion

There are many different types of fuel additives for cars on the market today. Some are designed to improve fuel economy, while others are meant to clean the engine and prevent build-up of deposits. Still others are designed to improve performance.

It is important to choose the right fuel additive for your car, based on the type of engine and the specific needs of your vehicle.

One fuel additive that has been shown to be effective in improving fuel economy is synthetic motor oil. This oil is designed to lubricate the engine and reduce friction, which can lead to better fuel economy.

Another fuel additive that can improve fuel economy is a fuel injector cleaner. This cleaner helps to remove deposits from the injectors, which can improve the efficiency of the engine.

Some fuel additives are designed to improve performance. One such additive is octane booster. This additive can help to increase the octane rating of the fuel, which can lead to better engine performance.

Another performance-enhancing fuel additive is a racing fuel additive. This additive can help to improve the power and acceleration of the car.

It is important to read the labels on fuel additives carefully to make sure that they are compatible with your car. Some fuel additives can damage the engine if they are not used properly. If you are unsure about which fuel additive to use, you should consult your mechanic or the manufacturer of your car.

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