AR6500 Diesel Treatment
AR6500 Diesel Treatment
AR6500 Diesel Treatment

AR6500 Diesel Treatment

Sale price$44.95

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• 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

Standard: 1 oz (30ml) of AR6500 Diesel Treatment per 10 gallons of diesel.

Power Boost: 2 oz (60ml) per 10 gallons of diesel. For best results use Power Boost dose in first tank of fuel.

Available in two sizes: 10.1 oz bottle treats up to 100 gallons; 40.6 oz bottle treats up to 400 gallons

AR6500 Diesel Treatment

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.


Archoil AR6500 removes internal diesel injector deposits and build-up from injector tips to ensure correct spray patterns and restore lost horsepower and fuel economy. AR6500 also prevents further carbon build-up.


AR6500 Diesel Treatment removes carbon from key fuel system components including the turbo, DPF and EGR. This prevents turbo lag, restores boost and reduces DPF regenerations.


The quality of fuel at gas stations is commonly not up to the standards vehicle manufacturers require. AR6500 increases the lubricity of fuel to exceed recommendations, extending component life and preventing premature failure.

Diesel Fuel System Kit

Save more when you buy an Archoil Performance Kit. This Diesel Fuel System Kit includes AR6500 Diesel Treatment (40oz) 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.

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This is the must-have kit for your diesel vehicle, including AR6500 Diesel Treatment (40oz), AR9100 Friction Modifier (16oz) and AR6400-D Diesel Fuel System Cleaner (12oz).

AR9100 eliminates stiction and associated cold start problems in 6.0L & 7.3L Power Strokes 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.


Customer Reviews

Based on 74 reviews
Seems to be a great product

No fuel system issues at all. Our 11’ F250 starts and runs great!

David Smith
Many miles

I feel that Archoil AR6500 will help me put more worry free miles on my truck

Eric Baylor

My truck is running better with only 5 treatments.

AR6500 Diesel Treatment

I can only comment on it after I see my engine when its time to do a tear down.
I would like to see a max lubricity to the product for older 6.0 engines since todays fuels have low sulfur. Hot shots does have a specific additive strictly for this. Since replacing injectors is what we try to avoid. I use Archoil 9100 and the AR6500 & the AR 6300 winter formula and the AR6400. I also would like to see a prodduct for Algae ! This seems to be a on going issue with todays Diesel Fuel process. I dont have much issue as of yet but do worry about it since I dont do as many miles as I use to. Anyway for a 6.0 Powerstroke I use your products and none other and have had excellent ressults so far. No stiction etc. I feel the product does well and have seen no harm by using it such as plugged filters etc. I add the AR6500 every fuel fill up and use the AR9100 every oil change and that will never change. Still would like a heavy max fuel lubricity additive. I did buy a some from Hot Shots, I think they call it Max LX4 26% more lubricate. Recap: I am a Archoil Customer and will always use your 6500,6300 and 9100 and truly know they preform to spec. 9100 is a must for 6.0 powerstrokes.Thanks for a good product that works for me.Think about a Algae product for todays Fuel issues.

Patrick Hayes
Awesome product

I have been using archoil for about 5 years. I live in Michigan so it gets pretty cold, sometimes below zero. I use both the oil and fuel additives and it works awesome. I highly recommend! Make sure if you're like me and winters are cold use 5w 40. It's pointless to use 15w 40 in colder climates. Unless you enjoy replacing batteries, starters and alternators. Ask me how I know.