10 Best Diesel Additive of December 2025

List of Top Rated Diesel Additive from thousands of customer reviews & feedback.

Updated On Dec 2025

1,627 Reviews Studied

By Customer Ratings

1
Image
Hot Shot's Secret Everyday Diesel Treatment 16 Ounce Squeeze Bottle (HSSEDT16ZS) Read Review

  • BOOSTS cetane up to 7 points
  • INCREASES power, performance, and fuel economy
  • STABILIZE fuel & disperse moisture
  • INCREASES lubricity & prevent rust and corrosion
  • 1-2 OZ per 25 GAL of diesel fuel
  • Treats 400 Gallons
  • Concentrated daily fuel booster
  • Fit type: Universal Fit
  • Flash point: 142.0 degrees_celsius

2
Image
Power Service Diesel Kleen + Cetane Boost - 6/80oz. Bottles Read Review

  • Cleans injectors, prevents injector sticking in engines, including High Pressure Common Rail (HPCR) systems
  • Boosts cetane up to 6 numbers — engines run smoother with less power lag and faster cold starts
  • Improves fuel economy up to 8% — fuel savings exceed cost of additive.
  • Stabilizes stored fuel.
  • Contains Slickdiesel Lubricator for maximum fuel lubrication, protects pumps and injectors.

3
Image
Hot Shot's Secret - DDD Diesel Duo, 2qt STICTION Eliminator and 2qt Diesel Extreme Read Review

  • Stiction Eliminator for engine oil reduces wear while restoring compression and power
  • Stiction Eliminator protects rings, injectors and turbo - anything that the oil touches
  • Diesel Extreme cleans injector tips and disperses moisture
  • Diesel Extreme fuel system cleaner restores throttle and boosts cetane up 7 points

4
Image
Stanadyne Performance Formula Diesel Fuel Additive - Pack of 4 Pint Bottles - Part # 38565 Read Review

  • 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

5
Image
Power Service 3016-09 Diesel Kleen+Cetane Boost, 16 Fluid Ounces, 9 Pack Read Review

  • Cleans dirty injectors and prevents injector sticking in both High Pressure Common Rail (HPCR) and older systems, effective in all diesel fuels, including ULSD, biodiesel and biodiesel blends
  • Removes both internal and external deposits on fuel injectors
  • Boosts cetane up to 6 numbers – engines run smoother with less power lag and faster cold starts
  • Boosts power – reduces need for downshifting; Restores lost power and fuel economy
  • Contains Slick diesel Lubricator to protect fuel pumps and injectors from increased wear caused by poor quality Ultra Low Sulfur Diesel (ULSD) fuel
  • Fit Type: Universal Fit

6
Image
Hot Shot's Secret - HSSEDT01G Everyday Diesel Treatment - EDT 1 Gallon - Treats Up to 3,200 Gallons Read Review

  • Boost cetane up to 7 points
  • Improve power, performance, and fuel economy
  • Maintains clean injectors & stabilize fuel
  • Clean engine parts & add lubricity
  • Fit type: Universal Fit

7
Image
Performance Formula One Shot 8oz, Case of 24 Bottles Treats 30 gallons Diesel Fuel per Bottle Read Review

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

8
Image
Stanadyne Performance Formula Diesel Fuel Additive 2 Pack of 1/2 Gallon Jugs - Part # 38566 Read Review

  • Made in the U.S.A. Restores/Increase Horsepower.
  • 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

9
Image
Stanadyne Performance Formula Diesel Fuel Additive - 16 Oz. Case of 12 Read Review

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

10
Image
Stanadyne Diesel Performance Formula 38566, 64 Ounce Read Review

  • 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