AR6500 Diesel Treatment

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  • $23.95
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Customer Reviews

Based on 57 reviews
Jesse Stella
One day

The truck is a slow death 64 ,till then I'll keep archy in there

Leonard Johnson
Archoil AR6500

I use it religiously and it works great for reducing the amount of soot buildup. Performance and mileage is up while using this product. Combine it with Archoil Friction Modifier to prevent Stiction on your 6.0. I especially like buying from powerstrokehelp because the proceeds goes toward helping vets back into civilian life.

Luke Taylor
Great, but smells!

The Archoil AR6500 fuel treatment is an amazing product, I use it for every fuel up and it gets me better fuel economy, but boy does it stink. This stuff smells like no other, you do not want to get this on your clothes or the inside of your truck cause you’ll smell like a stink bugs rear end for a while!

Barry Paulison
Great fuel mileage

I have a 2005 Ford F350 diesel with 222000 miles on it I tow a 38ft you hauler last trip I got between 8and9 mpg and between 17and18 mpg not towing it works great also I use the oil treatment my 6.0 runs great I tell everyone about archoil

Don Judge
It Does what it says it does!

I’ve used this before and it has raised the mileage to 14 miles per gallon. I have a 2005 6.0 F-350 Super Duty Lariat with a 8’ bed crew cab SRW. It has a little over 201,320 miles on it and it hasn’t been bulletproofed yet. It pulls my 24’ travel trailer with ease and doesn’t miss a lick. It runs very smooth for a Diesel engine. I tell everybody about it. I also use the oil treatment as well.
It’s my intention to get down there sometime in the future to try and shake Bill Hewitt’s hand and say Thank you to him for promoting Archoil.

Archoil's AR6500 Diesel Treatment has been formulated to address issues associated with modern diesel fuels. AR6500 incorporates the most powerful and advanced diesel additive chemistry that is currently available. Only 100% active ingredients are used with no fillers, offering greater value per fill up.

AR6500's detergents and lubricants have been engineered to clean, lubricate and protect your fuel system including injectors, pumps, lines and tank in all systems including the latest high pressure common-rail injection fuel systems.

AR6500 also incorporates Archoil's proven combustion modifier technology and a strong cetane boost to increase power and response and reduce soot and carbon build-up in turbos, DPF and EGR components.

Features and Benefits

  • Increase Power and Response
  • Improves MPG 6-10%
  • Reduces DPF Regen Frequency
  • Dissolves Sludge and Stabilizes Fuel
  • Improves Lubricity and Extends Component Life
  • Maintains and Protects Against Corrosion
  • Boosts Cetane Up To 8 Points


  • A 40.6 oz bottle treats up to 400 gallons
  • Use AR6500 every time you add diesel fuel
  • Everyday Dose: 10 ml (1 oz) per 10 gallons
  • Power Boost: 20 ml (2 oz) per 10 gallons


Diesel Fuel System Kit

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This Kit includes AR9100 Friction Modifier (16oz) and AR6400-D Diesel Fuel System Cleaner (12oz).

For the most rapid results, highest protection and best value, AR6500 should be used after application of Archoil AR6400-D Diesel Fuel System Cleaner. AR6400-D delivers a powerful and thorough cleaning service to the fuel system to quickly solve issues associated with carbon build-up and clogged injectors and should be used every 5,000 miles.

Diesel Fuel System Kit Benefits

  • AR6400-D rapidly removes internal diesel injector deposits (IDID) and carbon build-up from injector tips in all diesel applications
  • AR6400-D removes carbon build-up from the turbo. Carbon build-up negatively affects turbo performance and life
  • AR6400-D improves combustion which reduces carbon, soot and particulate exhaust emissions
  • AR6400-D is suitable for use in all diesel vehicles
  • AR6500 Diesel Treatment boosts performance, ensures fuel quality and maintains your fuel system
  • AR6500 promotes a more complete combustion which improves efficiency, power and response
  • AR6500 Boosts cetane by up to 8 points

Ultimate Diesel Kit

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The Archoil Ultimate Diesel Kit includes Archoil's newly-developed AR6500 Diesel Treatment (40.6oz), 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.

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 Diesel 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