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AR6400-D Diesel Fuel System Cleaner

Rapidly Cleans Injectors, DPF, Turbo & Fuel System

AR6400-D Diesel Fuel System Cleaner
AR6400-D Diesel Fuel System Cleaner
AR6400-D Diesel Fuel System Cleaner
AR6400-D Diesel Fuel System Cleaner
AR6400-D Diesel Fuel System Cleaner
AR6400-D Diesel Fuel System Cleaner

Archoil AR6400-D Diesel Fuel System Cleaner utilizes the latest and most powerful fluid technology to deliver a cleaning service to the key fuel system components - injectors, DPFs, turbos and EGRs.

Experience restored performance, improved fuel economy and smoother idling as a result of cleaning the fuel system with AR6400-D.

AR6400-D does not cure Power Stroke HEUI injector problems (stiction). Please use AR9100 Friction Modifier instead.

Cleans Injectors

  • AR6400-D rapidly removes internal diesel injector deposits (IDID) and carbon build-up from injector tips in all diesel applications
  • AR6400-D ensures correct injector spray patterns, resulting in a more complete combustion and lower emissions for optimized performance
  • Cleaning carried out by using AR6400-D results in more power and efficiency and less frequent regens

Removes Turbo Deposits

  • AR6400-D removes carbon build-up from the turbo. Carbon build-up negatively affects turbo performance and life
  • Carbon and soot deposits restrict movement of the turbine and variable vanes inside the turbo, resulting in turbo lag and less boost
  • AR6400-D prevents the accumulation of carbon to reduce excess heat and wear and avoid premature failure of the turbo

Reduces DPF Deposits

  • AR6400-D improves combustion which reduces carbon, soot and particulate exhaust emissions
  • AR6400-D cleans soot and carbon deposits from the DPF
  • Reduction in carbon and soot build-up will reduce regenerations, prevent performance loss and potential engine damage from clogged DPFs

AR6400-D Product Video

Watch the video to learn more about AR6400-D Diesel Fuel System Cleaner


One 12 oz bottle of AR6400-D treats 40 gallons of diesel fuel.

Add AR6400-D to the fuel tank at the required dosage and then add fuel. Use every 3,000 - 5,000 miles or as required.

Launch Price

Limited Time Only

MSRP: $24.95

Sale: $19.95

Buy Now

AR6400 Frequently Asked Questions

How much diesel does one 12 oz AR6400-D bottle treat?

AR6400-D is formulated to treat up to 40 gallons of diesel with maximum results. AR6400-D is less effective when added to more than 40 gallons.

What's the difference between AR6400-D and AR6500?

A small amount of AR6500 Diesel Treatment is added to every tank of fuel to boost performance, ensure diesel quality and protect the fuel system from wear, deposit formation and corrosion. AR6400-D is designed to be added in large doses to remove existing deposits from your fuel system and engine. We recommend using AR6500 at every fill-up and using AR6400-D every 3,000 – 5,000 miles.

I am currently using AR6500 and my vehicle is running fine. Will there be any benefit to using AR6400-D?

Removing deposits which have built up over time from diesel engines will restore power and fuel economy which has been degraded by deposit formation. Using a fuel system and engine cleaner regularly will maintain optimum fuel economy and power. AR6500 Diesel Treatment is a maintenance product and will help keep your fuel system clean in between treatments. In order to remove heavy deposits the higher concentration of detergent offered by AR6400-D Diesel Fuel System Cleaner is necessary.

Can I use AR6400-D at the same time as AR6500?

Yes, you can use AR6400-D at the same time as AR6500

Can AR6400-D be used in my vehicle?

AR6400-D is suitable for all diesel vehicles, including newer systems such as High Pressure Common Rail.

Customer Reviews

Based on 201 reviews
Gabriel C. (Tucson, AZ, US)
Magical juice

As a former mechanic is never believed in additives. But this is my 3rd purchase of this product and used on 3 different vehicles with great results. On my BMW X5 it made the idle smooth and the mpg up by 2. On my LML increase the regeneration interval from 300 miles to 600 miles. On a friend TDI took care of a hesitation it had.

Dr J. (Fruitland Park, FL, US)

I’m not kidding when I say that this product works! Not only has it given me a quicker start up and a smoother idle, but it has also made my 6.0L quieter. If you’re looking for a product to keep your diesel alive, this is it!

John B. (Athens, OH, US)
Best results ever

I pull a 15K LBS 5th Wheel RV and have a RAM2500 6.7L. I have tried many products on the market with very little results. Skeptical but willing to try . My boost on the turbo is up to full spec and my DPF is lower than ever without a regen in 800 miles. The power from my Ram is better than ever before. I have recommended this product to everyone that will listen.

Kerry w. (Humble, TX, US)
One of the best cleaners out there

My truck has over 100k and I was kind skeptical when I saw this but I am very pleased with the outcome. I have a little more HP and regen is few and far between cycles. The only cleaner that I will trust. Will definitely buy again.

Danny T. (Memphis, TN, US)
The only thing I trust

You run the product and feel a sort of power loss not much as the unburned cleaners clean the carbon from the turbo the next tank I run the cetane booster and pickup 3.5 mph my dpf trucks Regen less frequently and I've found that if running an exhaust brake frequently with this it cleans EGR cooler and valve and if you run extra it will remove carbon on valves as well.