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Archoil AR6500 Diesel Treatment 40 Ounces - Treats 400 Gallons - Additive for All Diesel Vehicles

★ 4.8 · 3,232 ratings
$89.90

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Archoil AR6500 Diesel Treatment 40 Ounces - Treats 400 Gallons - Additive for All Diesel Vehicles, $89.90, Availability unknown. Image 1 of 9.

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Archoil AR6500 Diesel Treatment 40 Ounces - Treats 400 Gallons - Additive for All Diesel Vehicles
SKU
JC12432
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Source specifications

Manufacturer
‎Archoil
Brand
‎Archoil
Item Weight
‎2.95 pounds
Package Dimensions
‎13.15 x 7.36 x 3.35 inches
Item model number
‎AR6500-40
Manufacturer Part Number
‎AR6500-40
ASIN
B09KS9JMDP
Customer Reviews
4.8 4.8 out of 5 stars (3,232) 4.8 out of 5 stars
Best Sellers Rank
#203 in Automotive ( See Top 100 in Automotive ) #2 in Diesel Additives
Date First Available
November 1, 2021

The details

About this item

Buy Archoil AR6500 Diesel Treatment (40 Ounces) - Treats 400 Gallons - Additive for All Diesel Vehicles: Diesel Additives - .com ✓ FREE DELIVERY possible on eligible purchases EASY USE AT EVERY FILL-UP: Add directly to the fuel tank at each fill-up. The long neck and measuring chamber make treating fuel simple. One 40 oz bottle treats up to 400 gallons; FOR ALL DIESEL ENGINES: Suitable for use in all diesel vehicles and equipment - light-duty, heavy-duty, pickup, SUV, van, RV, etc. (including modern HPCR systems); IMPROVES LUBRICITY (ASTM D6079): Tested to improve lubricity by 43% to help protect fuel system components, including wear-sensitive parts like the CP4 pump; BOOSTS CETANE UP TO +8: Raises cetane up to 8 points for faster ignition, smoother combustion, and improved drivability; many engines run best around 48–50 while pump diesel is Rated 4.8 out of 5.

  • EASY USE AT EVERY FILL-UP: Add directly to the fuel tank at each fill-up. The long neck and measuring chamber make treating fuel simple. One 40 oz bottle treats up to 400 gallons
  • FOR ALL DIESEL ENGINES: Suitable for use in all diesel vehicles and equipment - light-duty, heavy-duty, pickup, SUV, van, RV, etc. (including modern HPCR systems)
  • IMPROVES LUBRICITY (ASTM D6079): Tested to improve lubricity by 43% to help protect fuel system components, including wear-sensitive parts like the CP4 pump
  • BOOSTS CETANE UP TO +8: Raises cetane up to 8 points for faster ignition, smoother combustion, and improved drivability; many engines run best around 48–50 while pump diesel is often 40–45
  • CLEANS INJECTORS: AR6500's detergent package removes injector deposits and restores spray patterns for improved atomization, supporting better performance and fuel economy
  • SUPPORTS DPF & REDUCES REGENS: Targets deposit formation to help keep the DPF clean and reduce regeneration frequency – restores performance, fuel economy, and extends DPF lifespan
  • KEEPS TURBO CLEAN: Helps reduce fuel soot and deposit formation that impacts turbo response, restoring boost and smoother acceleration

From the manufacturer

Product details and media

Buy Archoil AR6500 Diesel Treatment (40 Ounces) - Treats 400 Gallons - Additive for All Diesel Vehicles: Diesel Additives - .com ✓ FREE DELIVERY possible on eligible purchases

Highlights: EASY USE AT EVERY FILL-UP: Add directly to the fuel tank at each fill-up. The long neck and measuring chamber make treating fuel simple. One 40 oz bottle treats up to 400 gallons FOR ALL DIESEL ENGINES: Suitable for use in all diesel vehicles and equipment - light-duty, heavy-duty, pickup, SUV, van, RV, etc. (including modern HPCR systems) IMPROVES LUBRICITY (ASTM D6079): Tested to improve lubricity by 43% to help protect fuel system components, including wear-sensitive parts like the CP4 pump BOOSTS CETANE UP TO +8: Raises cetane up to 8 points for faster ignition, smoother combustion, and improved drivability; many engines run best around 48–50 while pump diesel is often 40–45 CLEANS INJECTORS: AR6500's detergent package removes injector deposits and restores spray patterns for improved atomization, supporting better performance and fuel economy SUPPORTS DPF & REDUCES REGENS: Targets deposit formation to help keep the DPF clean and reduce regeneration frequency – restores performance, fuel economy, and extends DPF lifespan KEEPS TURBO CLEAN: Helps reduce fuel soot and deposit formation that impacts turbo response, restoring boost and smoother acceleration

Key details: Brand: ‎Archoil | Item Weight: ‎2.95 pounds | Package Dimensions: ‎13.15 x 7.36 x 3.35 inches | Manufacturer Part Number: ‎AR6500-40 | Customer Reviews: 4.8 4.8 out of 5 stars (3,232) 4.8 out of 5 stars

How it fits your day: Use the key specs and highlights above to match it to your setup, space, or routine before you check out.

Customer feedback: 4.8/5 average rating.

Review snippets: From what I had seen it was a great product but it was the worst thing I’ve bought in a long time. My fuel mileage went down drastically and my motor started to have more of a vibration to it / I suspect my Audi 3.0 TDI had a clogged cat some 5 years after a DPF delete back in 2019. MPG was down and it felt like it was also down on power. Sometimes the "Italian Tune-up" (high rev driving)

Archoil AR6500 Diesel Treatment 40 Ounces - Treats 400 Gallons - Additive for All Diesel Vehicles — product detail 1Archoil AR6500 Diesel Treatment 40 Ounces - Treats 400 Gallons - Additive for All Diesel Vehicles — product detail 2Archoil AR6500 Diesel Treatment 40 Ounces - Treats 400 Gallons - Additive for All Diesel Vehicles — product detail 3Archoil AR6500 Diesel Treatment 40 Ounces - Treats 400 Gallons - Additive for All Diesel Vehicles — product detail 4Archoil AR6500 Diesel Treatment 40 Ounces - Treats 400 Gallons - Additive for All Diesel Vehicles — product detail 5Archoil AR6500 Diesel Treatment 40 Ounces - Treats 400 Gallons - Additive for All Diesel Vehicles — product detail 6Archoil AR6500 Diesel Treatment 40 Ounces - Treats 400 Gallons - Additive for All Diesel Vehicles — product detail 7Archoil AR6500 Diesel Treatment 40 Ounces - Treats 400 Gallons - Additive for All Diesel Vehicles — product detail 8Archoil AR6500 Diesel Treatment 40 Ounces - Treats 400 Gallons - Additive for All Diesel Vehicles — product detail 9Archoil AR6500 Diesel Treatment 40 Ounces - Treats 400 Gallons - Additive for All Diesel Vehicles — product detail 10Archoil AR6500 Diesel Treatment 40 Ounces - Treats 400 Gallons - Additive for All Diesel Vehicles — product detail 11Archoil AR6500 Diesel Treatment 40 Ounces - Treats 400 Gallons - Additive for All Diesel Vehicles — product detail 12Archoil AR6500 Diesel Treatment 40 Ounces - Treats 400 Gallons - Additive for All Diesel Vehicles — product detail 13Archoil AR6500 Diesel Treatment 40 Ounces - Treats 400 Gallons - Additive for All Diesel Vehicles — product detail 14Archoil AR6500 Diesel Treatment 40 Ounces - Treats 400 Gallons - Additive for All Diesel Vehicles — product detail 15Archoil AR6500 Diesel Treatment 40 Ounces - Treats 400 Gallons - Additive for All Diesel Vehicles — product detail 16

Customer feedback

Customer ratings

4.8 out of 5

3,232 ratings

Matt

1.0 out of 5 stars Terrible

Rating: 1

January 18, 2025

Verified purchase

From what I had seen it was a great product but it was the worst thing I’ve bought in a long time. My fuel mileage went down drastically and my motor started to have more of a vibration to it idling. I used a bottle and a half before I decided it was trash. So now I’m just stuck with some overpriced shelf clutter. Read more

Bob

5.0 out of 5 stars Legit works! Boosted mpg, range, and power

Rating: 5

September 23, 2025

Verified purchase

I suspect my Audi 3.0 TDI had a clogged cat some 5 years after a DPF delete back in 2019. MPG was down and it felt like it was also down on power. Sometimes the "Italian Tune-up" (high rev driving) would briefly help by blowing a lot of crap out the back, but it would go back to reduced after a day or two. I had been using the Hotshots Every Day in each fill-up, which may have slowed this issue down but it still happened. I also tried Opti-Lube XPD for a few months. Not much, if any, improvement. I do suspect they helped improve cetane values, but idk what else. If I had a good run, I was getting ~560 miles per tank. After some YouTube videos, I decided to try Archoil. I didn't notice anything for a couple fill-ups, but after about 1-1.5 months, I started to notice some slight improvements in mileage to/from work and some other trips. It was getting hard to hit 30 mpg on the way to work, whereas I started hitting 31-32, even with significant traffic. After 2 months, there has been a definite improvement. I'm currently seeing 33+ mpg on the way to work (same conditions as before) and reaching closer to the 38 mpg EPA advertised on my way home. I've also hit 42 mpg coming home from a friends' house, whereas before it was struggling to hit 39. Power feels like it has returned to expected levels compared to the previous treatments. My range is now reporting >600 miles per tank, even dealing with some stop and go traffic. For the results, price, and ease of applying into the tank, I highly recommend using it and I intend to continue using this from hereon out. Read more

Springer Rider

1.0 out of 5 stars One bottle used...no change in mileage or performance, rude customer service.

Rating: 1

January 17, 2026

Verified purchase

I diligently used this product as instructed. As suspected any additive other than a cetane booster will have no MPG effect and that minimal only. It does not create a noticeable increase in performance or reduce "Regens." As a side note when I commented on their Facebook ad that I didn't see the improvements promised I was told I could get a total refund, so I inquired how to go about that...my posts were deleted. Read more

John Bunzey

5.0 out of 5 stars Great product

Rating: 5

February 25, 2026

Verified purchase

Works well in our diesel pickup Read more

Paul M. Nipper

5.0 out of 5 stars It works.. nuff said!?

Rating: 5

July 2, 2025

Verified purchase

Maybe there is such a thing as a mechanic in a can. I bought a Dodge RAM 2500 5.9 Cummins. It has 218k on it. I live off grid and drive 5.5 miles of slow going, country gravel road to get to my place. I felt the stutter in the engine going around curves and up hills at low speed and RPM. At this time I averaged 15.5 MPG on the factory digital display. I heard about this stuff from an old time that started using it in his old 99 RAM. I took his advice, and started using the full 3 part treatment . I've been consistently using all 3 products for more than a year now. I do the boost dose, 2oz per 10 gallons of diesel. My fuel economy has increased to average 17.4 MPG reading, there is absolutely no stutter at any speed or RPM. I'm NOT a mechanic, but I know a better running truck when I see it and drive it. I've got 248K now and this truck runs far better than it did the day I bought it thanks to a little TLC and the Archoil line. Read more

Nick W.

1.0 out of 5 stars No difference

Rating: 1

July 8, 2022

Verified purchase

I have a ‘21 GMC Canyon Duramax with 48,k miles. After using the whole bottle, I can say that my average fuel efficiency hasn’t increased even 1 mpg, this hasn’t reduced regens at all (regens have always been approx 400 miles), and I there hasn’t been any noticeable “restoration of power”. Now, my truck is fairly new, and I’m not saying that it wouldn’t be beneficial to an older truck, but in my experience this did nothing but cost me money. I use only Blu Def Platinum, which probably has the same cleaning effect on the DPF as this product, and I only use Top Tier diesel which contains additives which also clean the engine and exhaust system. On a properly maintained vehicle, this product just seems like a waste of money. Read more

Russell Coates

1.0 out of 5 stars This stuff ruins your fuel system, buyers beware

Rating: 1

October 9, 2024

Verified purchase

This stuff is junk. I used it two fill ups and now having injectors cutting out, a VGT issue, and now truck is making oil aka. Fuel getting into the crank case. Thank you so much Archoil I am having to spend thousands fixing issues that I did not have before I started using your product. Read more

C. Palasciano

5.0 out of 5 stars Great product

Rating: 5

February 27, 2026

Verified purchase

Used every time I refuel my diesel trucks. Keeps my fuel system lubricated. Read more

Complete product information
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    "items": [
      {
        "title": "1.0 out of 5 stars Terrible",
        "body": "From what I had seen it was a great product but it was the worst thing I’ve bought in a long time. My fuel mileage went down drastically and my motor started to have more of a vibration to it idling. I used a bottle and a half before I decided it was trash. So now I’m just stuck with some overpriced shelf clutter. Read more",
        "author": "Matt",
        "rating": 1,
        "date": "January 18, 2025",
        "verified": true,
        "images": []
      },
      {
        "title": "5.0 out of 5 stars Legit works! Boosted mpg, range, and power",
        "body": "I suspect my Audi 3.0 TDI had a clogged cat some 5 years after a DPF delete back in 2019. MPG was down and it felt like it was also down on power. Sometimes the \"Italian Tune-up\" (high rev driving) would briefly help by blowing a lot of crap out the back, but it would go back to reduced after a day or two. I had been using the Hotshots Every Day in each fill-up, which may have slowed this issue down but it still happened. I also tried Opti-Lube XPD for a few months. Not much, if any, improvement. I do suspect they helped improve cetane values, but idk what else. If I had a good run, I was getting ~560 miles per tank. After some YouTube videos, I decided to try Archoil. I didn't notice anything for a couple fill-ups, but after about 1-1.5 months, I started to notice some slight improvements in mileage to/from work and some other trips. It was getting hard to hit 30 mpg on the way to work, whereas I started hitting 31-32, even with significant traffic. After 2 months, there has been a definite improvement. I'm currently seeing 33+ mpg on the way to work (same conditions as before) and reaching closer to the 38 mpg EPA advertised on my way home. I've also hit 42 mpg coming home from a friends' house, whereas before it was struggling to hit 39. Power feels like it has returned to expected levels compared to the previous treatments. My range is now reporting >600 miles per tank, even dealing with some stop and go traffic. For the results, price, and ease of applying into the tank, I highly recommend using it and I intend to continue using this from hereon out. Read more",
        "author": "Bob",
        "rating": 5,
        "date": "September 23, 2025",
        "verified": true,
        "images": []
      },
      {
        "title": "1.0 out of 5 stars One bottle used...no change in mileage or performance, rude customer service.",
        "body": "I diligently used this product as instructed. As suspected any additive other than a cetane booster will have no MPG effect and that minimal only. It does not create a noticeable increase in performance or reduce \"Regens.\" As a side note when I commented on their Facebook ad that I didn't see the improvements promised I was told I could get a total refund, so I inquired how to go about that...my posts were deleted. Read more",
        "author": "Springer Rider",
        "rating": 1,
        "date": "January 17, 2026",
        "verified": true,
        "images": []
      },
      {
        "title": "5.0 out of 5 stars Great product",
        "body": "Works well in our diesel pickup Read more",
        "author": "John Bunzey",
        "rating": 5,
        "date": "February 25, 2026",
        "verified": true,
        "images": []
      },
      {
        "title": "5.0 out of 5 stars It works.. nuff said!?",
        "body": "Maybe there is such a thing as a mechanic in a can. I bought a Dodge RAM 2500 5.9 Cummins. It has 218k on it. I live off grid and drive 5.5 miles of slow going, country gravel road to get to my place. I felt the stutter in the engine going around curves and up hills at low speed and RPM. At this time I averaged 15.5 MPG on the factory digital display. I heard about this stuff from an old time that started using it in his old 99 RAM. I took his advice, and started using the full 3 part treatment . I've been consistently using all 3 products for more than a year now. I do the boost dose, 2oz per 10 gallons of diesel. My fuel economy has increased to average 17.4 MPG reading, there is absolutely no stutter at any speed or RPM. I'm NOT a mechanic, but I know a better running truck when I see it and drive it. I've got 248K now and this truck runs far better than it did the day I bought it thanks to a little TLC and the Archoil line. Read more",
        "author": "Paul M. Nipper",
        "rating": 5,
        "date": "July 2, 2025",
        "verified": true,
        "images": []
      },
      {
        "title": "1.0 out of 5 stars No difference",
        "body": "I have a ‘21 GMC Canyon Duramax with 48,k miles. After using the whole bottle, I can say that my average fuel efficiency hasn’t increased even 1 mpg, this hasn’t reduced regens at all (regens have always been approx 400 miles), and I there hasn’t been any noticeable “restoration of power”. Now, my truck is fairly new, and I’m not saying that it wouldn’t be beneficial to an older truck, but in my experience this did nothing but cost me money. I use only Blu Def Platinum, which probably has the same cleaning effect on the DPF as this product, and I only use Top Tier diesel which contains additives which also clean the engine and exhaust system. On a properly maintained vehicle, this product just seems like a waste of money. Read more",
        "author": "Nick W.",
        "rating": 1,
        "date": "July 8, 2022",
        "verified": true,
        "images": []
      },
      {
        "title": "1.0 out of 5 stars This stuff ruins your fuel system, buyers beware",
        "body": "This stuff is junk. I used it two fill ups and now having injectors cutting out, a VGT issue, and now truck is making oil aka. Fuel getting into the crank case. Thank you so much Archoil I am having to spend thousands fixing issues that I did not have before I started using your product. Read more",
        "author": "Russell Coates",
        "rating": 1,
        "date": "October 9, 2024",
        "verified": true,
        "images": []
      },
      {
        "title": "5.0 out of 5 stars Great product",
        "body": "Used every time I refuel my diesel trucks. Keeps my fuel system lubricated. Read more",
        "author": "C. Palasciano",
        "rating": 5,
        "date": "February 27, 2026",
        "verified": true,
        "images": []
      }
    ]
  },
  "short_description": "Buy Archoil AR6500 Diesel Treatment (40 Ounces) - Treats 400 Gallons - Additive for All Diesel Vehicles: Diesel Additives - .com ✓ FREE DELIVERY possible on eligible purchases.",
  "about_this_item": "Buy Archoil AR6500 Diesel Treatment (40 Ounces) - Treats 400 Gallons - Additive for All Diesel Vehicles: Diesel Additives - .com ✓ FREE DELIVERY possible on eligible purchases EASY USE AT EVERY FILL-UP: Add directly to the fuel tank at each fill-up. The long neck and measuring chamber make treating fuel simple. One 40 oz bottle treats up to 400 gallons; FOR ALL DIESEL ENGINES: Suitable for use in all diesel vehicles and equipment - light-duty, heavy-duty, pickup, SUV, van, RV, etc. (including modern HPCR systems); IMPROVES LUBRICITY (ASTM D6079): Tested to improve lubricity by 43% to help protect fuel system components, including wear-sensitive parts like the CP4 pump; BOOSTS CETANE UP TO +8: Raises cetane up to 8 points for faster ignition, smoother combustion, and improved drivability; many engines run best around 48–50 while pump diesel is Rated 4.8 out of 5.",
  "long_description": "Buy Archoil AR6500 Diesel Treatment (40 Ounces) - Treats 400 Gallons - Additive for All Diesel Vehicles: Diesel Additives - .com ✓ FREE DELIVERY possible on eligible purchases\n\nHighlights: EASY USE AT EVERY FILL-UP: Add directly to the fuel tank at each fill-up. The long neck and measuring chamber make treating fuel simple. One 40 oz bottle treats up to 400 gallons FOR ALL DIESEL ENGINES: Suitable for use in all diesel vehicles and equipment - light-duty, heavy-duty, pickup, SUV, van, RV, etc. (including modern HPCR systems) IMPROVES LUBRICITY (ASTM D6079): Tested to improve lubricity by 43% to help protect fuel system components, including wear-sensitive parts like the CP4 pump BOOSTS CETANE UP TO +8: Raises cetane up to 8 points for faster ignition, smoother combustion, and improved drivability; many engines run best around 48–50 while pump diesel is often 40–45 CLEANS INJECTORS: AR6500's detergent package removes injector deposits and restores spray patterns for improved atomization, supporting better performance and fuel economy SUPPORTS DPF & REDUCES REGENS: Targets deposit formation to help keep the DPF clean and reduce regeneration frequency – restores performance, fuel economy, and extends DPF lifespan KEEPS TURBO CLEAN: Helps reduce fuel soot and deposit formation that impacts turbo response, restoring boost and smoother acceleration\n\nKey details: Brand: ‎Archoil | Item Weight: ‎2.95 pounds | Package Dimensions: ‎13.15 x 7.36 x 3.35 inches | Manufacturer Part Number: ‎AR6500-40 | Customer Reviews: 4.8 4.8 out of 5 stars (3,232) 4.8 out of 5 stars\n\nHow it fits your day: Use the key specs and highlights above to match it to your setup, space, or routine before you check out.\n\nCustomer feedback: 4.8/5 average rating.\n\nReview snippets: From what I had seen it was a great product but it was the worst thing I’ve bought in a long time. My fuel mileage went down drastically and my motor started to have more of a vibration to it / I suspect my Audi 3.0 TDI had a clogged cat some 5 years after a DPF delete back in 2019. MPG was down and it felt like it was also down on power. Sometimes the \"Italian Tune-up\" (high rev driving)",
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