The only treatment to clean, restore and boost the entire fuel system

Unlike other everyday treatments, AR6500 cleans the entire fuel system and post-combustion system (turbo, DPF), providing unparalleled protection for your engine. Additionally, AR6500 offers a stronger cetane boost and superior lubricity improvement compared to other products on the market, ensuring enhanced performance and maximized fuel economy.

Boost cetane to increase power and response

In the US, most diesel engines require a cetane number (CN) between 40 and 55, but most diesel fuel has a CN of around 40 to 45. Low CN results in poor combustion, causing soot deposits and carbon build-up in key fuel system components.

AR6500 Diesel Treatment offers multiple benefits by boosting cetane by up to 8 points. This results in:

  • Improved combustion efficiency
  • Enhanced fuel economy
  • Reduced regens
  • Increased power and performance
  • Extended component life

Most other products on the market provide a more modest cetane boost, insufficient to meet manufacturer recommendations.

Improve fuel lubricity to extend fuel system life

Lack of lubrication in diesel fuel is a major issue for both older and newer vehicles, leading to excessive wear, costly repairs and potential failure of components including injectors and pumps.

AR6500 Diesel Treatment has been independently tested (ASTM D6079) to increase lubricity by 43% and reduce wear scar width from 615 microns to 348 microns, well below the Engine Manufacturer's Association's recommended maximum of 460 microns. This results in:

  • Protected engine components
  • Reduced maintenance costs
  • Improved engine reliability
  • Extended component lifespan
Clean injectors to restore combustion efficiency

AR6500 contains highly concentrated detergents which remove internal diesel injector deposits (IDIDs) and carbon build-up from injector tips.

AR6500 cleans injectors to:

  • Improve fuel atomization
  • Produce a more complete combustion
  • Correct spray patterns
  • Reduce carbon deposits
  • Enhance fuel economy
The only treatment to clean the DPF

Over time, carbon builds up in the Diesel Particulate Filter (DPF) and leads to reduced engine performance, reduced fuel economy, and potential engine damage. Frequent regeneration cycles and warning lights indicate ongoing issues, often resulting in costly repairs.

Cleaning a DPF manually is not possible on many vehicles and replacement typically ranges from $2,000 up to $10,000. Unlike other additives, AR6500 utilizes proprietary chemistry to remove carbon build-up from the DPF. This results in:

  • Reduced regeneration frequency
  • Restored MPG & performance
  • Prevention of engine damage due to a clogged DPF
Prevent turbo failure and restore boost

A dirty turbo restricts airflow, reducing engine efficiency and power. This leads to increased fuel consumption and turbo lag. Carbon deposits can also cause overheating and potential failure, resulting in costly repairs.

Certain elements of Archoil's proprietary chemistry blend survive the combustion process and utilize heat from the exhaust to remove carbon build-up from post-combustion system components including the turbo. This results in:

  • Reduced turbo lag and restored boost
  • Minimized wear and damage
  • Restored optimal temperature
  • Improved airflow efficiency
AR6500 Diesel Treatment
AR6500 Diesel Treatment
AR6500 Diesel Treatment
AR6500 Diesel Treatment
AR6500 Diesel Treatment

AR6500 Diesel Treatment

Regular price $89.90 Sale price$79.90 Save $10.00
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AR6500 Diesel Treatment is the superior all-in-one diesel additive, developed to maximize engine performance. Increase diesel lubricity to protect your engine and improve fuel economy with a big cetane boost at every fill-up.

 

 

  • Boost cetane up to 8 points
  • Improve combustion efficiency
  • Increase fuel economy
  • Lubricate and protects the fuel system
  • Clean injectors, turbo and DPF (reduce regens)
  • Reduce maintenance and extend component life

Standard: 1 oz (30ml) of AR6500 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.

Click here to read the AR6500 Data Sheet which includes test results and more information on how the product cleans your diesel fuel system.

Customer Reviews

Based on 457 reviews
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(422)
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D
Donald M. (Athens, GA, US)
7.3 candy

My 97 F250 OBS loves Archoil additives and fuel treatment. Helps the old girl run smoothly and get better mileage. I love it. I use the fuel treatment as well as the oil treatment.

M
Mike B. (Statesville, NC, US)
Great diesel treatment!

As a retired technician of over 40 years, I didn’t put much faith into an additive, but with today’s lousy fuels I almost had no choice, but to try something to preserve my engine. I’m not exactly sure what this stuff does internally, but I know that it works you can feel it in the pedal and you can feel it in the seat. I told a 10,000 pound travel trailer and I could immediately feel the difference .The engine just runs smoother. Fuel mileage even goes up a bit. My new Duramax has better throttle response and better roll on power. I can’t exactly explain it, but I will continue to use Archoil products for these benefits alone. hopefully will help preserve my injectors and fuel system.

As far as the company goes, my first order had a bottle leakage due to poor handling on the part of the shipping company. I let Archoil know about it and they replaced the bottle immediately, no questions asked. I like that type of customer service. I love a company that stands behind their product. Well done guys. you have earned my business.

K
Kevin K. (Chicago, IL, US)
Best I can tell - It works

I have a GMC 1500 that I just bought a few months ago (3.0L) and went ahead and bought this as a safety measure. The bottle spilled in transit and I lost about 20% into the sealed bag (thankfully it wasn't a mess).

I love that you can dispense it and measure straight from the bottle.

I'm happy with my fuel economy, just wish I could buy it locally so I didn't have to mess with shipping. (and wish the bottle itself had a better seal).

g
george o. (Camarillo, CA, US)
IT WORKS

I was not sure if this product was all that.
But I gave a shot and I was surprised you can see and feel the difference my MPG went up to 19 -21mpg from 13 -15 mpg
And the truck feels smoother.
I have 2018 Denali 2500HD and I will be using this product long term.

AR6500 FAQs

AR6500 improves lubricity in fuel, cleans and maintains the fuel system and adds cetane for a boost that can be felt at every fill-up. AR6400-D is a highly concentrated one-tank fuel system cleaner to be used every 5,000 miles for rapid cleaning of heavy carbon build-up.

AR6500 is suitable for all diesel vehicles, including newer systems such as High Pressure Common Rail.

AR6500 will remain stable indefinitely if kept away from sources of heat and sunlight.

No, AR6300 Winter Diesel Treatment is the product you need for cold weather. AR6300 contains all the benefits of AR6500 plus anti-gel protection up to -44ºF.