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Archoil AR6500 Diesel Treatment (40.6 oz) - Treats 400 Gallons - Additive for All Diesel Vehicles

  • Based on 727 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Archoil, Inc

Arrives Wednesday, May 29
Order within 2 hours and 25 minutes
Available payment plans shown during checkout

Size: AR6500 (40oz)


Features

  • 40.6 oz bottle treats 400 gallons - Use at every fill-up
  • Formulated to address issues with modern diesel fuels
  • Incorporates Archoil's proven combustion modifier technology and a strong cetane boost to increase power and response
  • Cleans, lubricates and protects your fuel system (including HPCR systems)
  • Increases fuel economy (MPG)

Manufacturer: ‎Archoil


Brand: ‎Archoil


Item Weight: ‎3.24 pounds


Package Dimensions: ‎12.91 x 6.3 x 6.22 inches


Manufacturer Part Number: ‎AR6500-40


Date First Available: November 1, 2021


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, May 29

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Probably the best additive I've used
Size: AR6500 (40oz)
I've tried all the diesel additives, and this one is the best overall. I have noticed an improvement across the board, including mileage, Regens (longer), and EGR performance. Here are a few things I discovered with this product. I've had to use the double dose (2oz per 10 gallons of diesel) to get the improvements I'm seeing. I have a 2015 F-250 6.7. - 1-2mpg improvement, mostly on the freeway - Considerably lower soot levels sustained between regens (this is the best reason to buy this). I have an Edge CTS 3 to monitor all this stuff, which I highly recommend as well. - And related to the above, better EGR cooler performance. I got a warning of low EGR efficiency in Forscan (not enough to throw a code, but it would eventually) and cleared/removed it by running a couple of tanks of this stuff. Overall, I recommend this stuff. Not sure about the CP4 protection stuff. ... show more
Reviewed in the United States on August 25, 2023 by Ryan Mount

  • easy to use
Size: AR6500 (40oz)
I added this for the 1st time just before we took a trip 600 plus miles. the overall mileage was up about 10% . I would recommend this
Reviewed in the United States on September 24, 2023 by E Reeder

  • Good stuff.
Size: AR6500 (40oz) Two Pack
My truck runs great on this stuff. When I ran out, I suffered through a few fuel related problems. Lower mileage as well. Hard to tell exactly if it was the cause or coincidence. I’m not going to risk it if I can help it. Every fill up. 2oz per gallon. Archoil oil additive (friction modifier) is really good science and metallurgy. Every other oil change. Older diesels need a “spa day” to keep them happy. 2006 e450 6.0. ... show more
Reviewed in the United States on September 1, 2023 by Fred flintstone

  • Try it and tell
Size: AR6500 (40oz)
Brand new 202e Ram 2500. Started using this with less than 2k on the ODO and averaged 15mpg. Started using this and literally jumped to nothing under 17mpg. Stock everything, nothing altered. Works for me!
Reviewed in the United States on September 21, 2023 by Daniel

  • TOTAL BELIEVER!
Size: AR6500 (40oz) Two Pack
I LOVE ALL ARCHOIL PRODUCTS! JUST HAVEN'T NOTICED A CHANGE IN MPG AS STATED WITH THE CLAIM OF THIS PRODUCT. BUT USE IT FOR THE MECHANICAL BENEFITS OF KEEPING INJECTORS CLEAN.
Reviewed in the United States on September 18, 2023 by Clare m.

  • Insrance
Size: AR6500 (40oz) Two Pack
Using this to minimize stiction and add some lubricity to avoid HPFP failures. Much is made of these fuel additives (remember STP) and Lucas has been around forever but little about their capabilities is proven clearly enough for public consumption. Those tests that have been done give this a better than most opinion but that may not apply for all applications. Is see it as value because to date, no failures in my 500,000 miles of diesel truck use over 20 years. Longest application is on 175,000 mile Ford 7.3 PSD ... show more
Reviewed in the United States on August 9, 2023 by Deresky

  • Diesel additive
Size: AR6500 (40oz)
Was on the fence of ordering this product. After some research I took the plunge. WOW!! We gained about 5mpg’s using archoil after two tank fills. So far very happy
Reviewed in the United States on September 9, 2023 by Beth

  • It works
Size: AR6500 (40oz)
It has helped my truck’s mpg
Reviewed in the United States on September 20, 2023 by Hubert Morris

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