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After deep searching of thousands and millions of articles and reviews by our powerful Artificial Intelligence and ML algorithms; and deep refining, analysis and rectification by our professional technology experts, the golden shortlist for the Best Diesel Additives (2021) is ultimately prepared.

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In order to find the Best Diesel Additives (2021), our intelligent platforms and gurus have taken many elements into account such as product usability, features that meet buyers needs and give buyer satisfaction, defect and deficiency-free, conformance of standards, worthiness for money, reliability, quality of design, quality conformance to needs and regulations, protection and safety, actual buyer satisfaction and numerous others. It is important to note that each user has different needs so please use the list below as a guideline and not as a gospel. Nonetheless, in the below list you can undoubtedly find the overall best ones regardless of your requirements.

Our smart platforms and competent high-tech experts work hard to identify the best product options. We are positive that our review evaluation can help you simplify your purchase decision and make a pick among the truly Best Diesel Additives (2021).

Best Diesel Additives

Best Choice No. 1
Stanadyne Performance Formula Diesel Fuel Additive 2 Pack of 1/2 Gallon Jugs – Part # 38566
  • 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
Best Choice No. 2
Stanadyne Performance Formula Diesel Fuel Additive – 16 Oz. Case of 12
  • 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
Best Choice No. 4
Best Choice No. 5
Liqui Moly (2002-20PK) Super Diesel Additive – 300 ml, (Pack of 20)
  • Diesel hi-test, cetane boost
  • Keeps fuel system and combustion chambers clean and prevents deposits from forming
  • Keeps injectors clean
  • Prevents seizing
  • Contains antioxidant and prevents corrosion
Best Choice No. 6
Opti-Lube XPD Formula Diesel Fuel Additive: 1 Gallon with Accessories (HDPE Plastic Hand Pump and 2 Empty 8oz Bottles) Treats up to 512 Gallons
  • MADE FOR OPTIMAL LUBRICATION: Your truck has been there for you every minute and every mile, which is why it’s important to keep it in pristine condition and the tools in the toolbox. At Opti-Lube, our goal is to keep your engine operating at its best. Our fuel additive helps to increase the lubricity properties of ultra-low-sulfur diesel (ULSD) so that you can play more and worry less.
  • IMPROVES FUEL ECONOMY: Trucks are known for eating up fuel. Fortunately, there’s a way to fix that with Opti-Lube XPD formula. This diesel fuel additive has been shown to enhance fuel mileage year round, giving you more bang for your buck. With greater fuel economy, you’ll find increased power for both summer and winter driving.
  • CLEANS INJECTORS: When your fuel injectors build up with residue, your engine usually doesn’t run as efficiently. Opti-Lube XPD formula cleans injectors while helping prevent future build-up. This helps to reduce deposits and emissions, making this lube compatible with all vehicle emissions systems. Additionally, it acts as rust and corrosion prevention to keep your vehicle in tip-top shape.
  • ENHANCES PERFORMANCE: Whether during rain, snow, or shine, Opti-Lube XPD formula delivers. It works to improve the performance of your truck all year round. This fuel additive also helps separate water from Diesel fuel as a demulsifier and more than doubles the storage life of standard diesel fuel. Contains enough Anti-Gel to keep fuel flowing down to -10F*.
  • COMES WITH ACCESSORIES: With your purchase, you’ll receive 1 gallon of Opti-Lube XPD Formula Diesel Fuel Additive, a convenient hand pump, and 2 empty 8-ounce bottles for on-the-go travel. You can use the empty bottles for when you’re on the go. This diesel fuel treatment isn’t just limited to trucks; use it for your farm and construction equipment too!
Best Choice No. 7
Stanadyne Performance Formula Diesel Fuel Additive – Pack of 4 Pint Bottles – Part # 38565
  • 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
Best Choice No. 8
Archoil AR6500 Diesel Treatment (33oz) – Additive for All Diesel Vehicles
  • 33oz bottle treats 330 gallons
  • Formulated to address issues with modern diesel fuels
  • Incorporates Archoil’s proven combustion modifier technology and a strong cetane boost to increase power and response
  • Cleans, lubricates and protects your fuel system (including HPCR systems)
Best Choice No. 9
Power Service 32 Ounce 3025 + Cetane Boost Diesel Kleen Fuel Additive-32 oz
  • 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

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