AR6400-D Diesel Fuel System Cleaner

  • Sale
  • $19.95
  • Regular price $24.95

Customer Reviews

Based on 175 reviews
Diesel Kleen vs Archoil

Have always been using Diesel Kleen. The knocking sound when you get low cetane fuel ( B20) disappears immediately. Decided to try Archoil I did not have any problems so I’m not sure what to expect. Archoil did as well as Diesel Kleen. I could not hear a difference. MPG is the same. My reason for using additives is mainly to increase lubricity. Not sure which one is best.

Steve Drinkwater
Works great

Did the job

Bryan Gorman

Works really well. First regen after adding it into the fuel the DPF went down to almost 0%. It stopped at like 7 or 8%.

Donnie Ledbetter
Showing a little improvement after first time trying out your product

Wish you could use it more often than every 5000 miles.

Michael Parsley

I thought my 7.3 ran fine. After I used AR6400-D, it starts easier and runs smoother. I really didn't expect much of a difference, since I am very meticulous with maintenance, but this stuff actually works.

Essential for All Diesel Owners

This new Archoil product restores performance and improves fuel economy in your truck by removing carbon build-up from the key fuel system components.

Please note: AR6400-D does not fix HEUI injector stiction - please use Archoil AR9100 Friction Modifier to eliminate stiction.


Archoil AR6400-D Diesel Fuel System Cleaner is absolutely crucial to the longevity of the engine and the fuel injection system in all Power Strokes.

- Bill Hewitt

AR6400-D Diesel Fuel System Cleaner

Treats 40 gallons of diesel. Use every 5,000 miles.

AR6400-D Benefits

  • AR6400-D removes carbon build-up from injectors and injector tips to ensure correct spray patterns. This leads to restored performance and improved fuel economy.
  • AR6400-D's unique formulation removes carbon from post-combustion components including the turbo and DPF
  • AR6400-D eliminates harmful turbo deposits which cause lag and less boost. Use of AR6400-D results in unrestricted movement of the turbo/variable vanes to avoid issues with excess heat and wear
  • AR6400-D improves combustion which benefits the EGR with a reduction in carbon accumulation
  • AR6400-D's powerful chemistry cleans the DPF and reduces regen cycles
  • AR6400-D is suitable for use in all diesel engines

The Ultimate Diesel Kit

The Archoil Ultimate Diesel Kit includes Archoil's newly-developed AR6500 Diesel Treatment 33oz, AR9100 Friction Modifier 16oz and AR6400-D Diesel Fuel System Cleaner 12oz.

This is the must-have kit for your diesel vehicle. AR9100 eliminates stiction and associated cold start problems while AR6500 provides regular maintenance to your fuel system at every fill-up, combating issues associated with poor quality diesel. AR6400-D provides a powerful, one-tank cleaning service to remove harmful carbon build-up from the fuel system.

The Ultimate Diesel Kit Benefits

  • AR9100 eliminates hard/cold start issues caused by HEUI injector misfires in 6.0L & 7.3L Power Strokes
  • AR9100 forms a solid boundary lubricating film to improve performance and protect engines, gearboxes and hydraulic systems
  • AR6500 Fuel Treatment boosts performance, ensures fuel quality and maintains your fuel system
  • AR6500 promotes a more complete combustion which improves efficiency, power and response
  • AR6400-D rapidly removes carbon build-up from the injectors, turbo and DPF
  • AR6400-D restores performance, improves fuel economy and smooths idling