AR6500 Diesel Treatment
AR6500 Diesel Treatment
AR6500 Diesel Treatment

AR6500 Diesel Treatment

Sale price$19.95

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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 63 reviews
James Christensen
Peace of mind

She runs clean and no EGR codes

Joseph Bieberly
Shocking results

The first time that I used this product I was shocked at what a difference it made. I have been using it ever since. No other additive compares.

It really works

I've been using the 6200 for awhile and it's great, but I ordered the 6500 and immediately noticed an increase in fuel mileage with the first tank.

Adrian Ruiz
Great Product

I’ve used it for only 6 months and from the beginning I noticed a big difference. I add some every time I fill my truck. About 2 weeks ago my truck turned the 400K mark and my truck never ran this good.

Phillip Robeson
Excellent Product!

I use this in every diesel refuel and I have noticed better gas mileage and my engine runs smoother.