Archoil AR6500 diesel treatment 40 oz two pack for all diesel vehicles treats 800 gallons
Archoil AR6500 Diesel Treatment (40 oz) Two Pack - Treats 800 Gallons - Additive for All Diesel Vehicles
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Archoil AR6500 Diesel Treatment (40 oz) Two Pack - Treats 800 Gallons - Additive for All Diesel Vehicles

Key item features

  • EASY USE AT EVERY FILL-UP (2-Pack Value): Add directly to the fuel tank at each fill-up. Includes two 40 oz bottles – each treats up to 400 gallons (800 gallons total)
  • 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
Current price is $79.90
Price when purchased online
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  • Free 90-day returns

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Arrives by Wed, May 20
Sold by Archoil, Inc.Pro Seller
Fulfilled by Walmart
4.746268656716418 stars out of 5, based on 67 seller reviews(4.7)
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4.8 out of 5 stars
stars1,007 ratings1,001 reviews
How item rating is calculated
  1. 5 stars86% (871)
  2. 4 stars7% (72)
  3. 3 stars3% (35)
  4. 2 stars2% (16)
  5. 1 star1% (13)
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Showing 1-3 of 1,001 reviews

May 11, 2026
Robert
Top Reviewer
Sold byArchoil, Inc.Delivered byWalmart
5 out of 5 stars review

Verified Purchase

great!!

noticeably better fuel mileage and performance.. Ford 6.7, great product.. way better thsn EDT.

Incentivized Review
Helpful?3MXX0SBTI1C12277577259
Mar 27, 2026
Jerry
Sold and shipped byArchoil, Inc.
5 out of 5 stars review

Verified Purchase

Work better than I expected.

Dropped my DPF regeneration times and mileage down significantly

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Helpful?3MXX0SBTI1C12277577259
Dec 18, 2025
Lindsay
Sold and shipped byArchoil, Inc.
5 out of 5 stars review

Verified Purchase

Better Performance

Archoil really helps my diesels performance. Love it! I don't fill up at the station without adding Archoil.

Incentivized Review
Helpful?3MXX0SBTI1C12277577259