---
product_id: 375895066
title: "- Archoil AR6500 Diesel Treatment (40 Ounces) - Treats 400 Gallons - Additive for All Diesel Vehicles"
price: "A$127"
currency: AUD
in_stock: true
reviews_count: 8
url: https://www.desertcart.com.au/products/375895066-archoil-ar6500-diesel-treatment-40-ounces-treats-400-gallons-additive
store_origin: AU
region: Australia
---

# Treats 400 gallons per 40 oz bottle Boosts cetane by up to +8 points Improves lubricity by 43% (ASTM D6079) - Archoil AR6500 Diesel Treatment (40 Ounces) - Treats 400 Gallons - Additive for All Diesel Vehicles

**Price:** A$127
**Availability:** ✅ In Stock

## Summary

> 🚛 Unlock Diesel Dominance: Power, Protection & Efficiency in Every Drop!

## Quick Answers

- **What is this?** - Archoil AR6500 Diesel Treatment (40 Ounces) - Treats 400 Gallons - Additive for All Diesel Vehicles
- **How much does it cost?** A$127 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/375895066-archoil-ar6500-diesel-treatment-40-ounces-treats-400-gallons-additive)

## Best For

- Customers looking for quality international products

## Why This Product

- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **DPF Support & Reduced Regeneration:** Targets harmful deposits to keep your Diesel Particulate Filter cleaner longer, reducing costly regen cycles and extending lifespan.
- • **Effortless Every Fill-Up Fuel Care:** Add directly with the long neck & measuring chamber for precise dosing—no guesswork, just peak performance.
- • **Injector Cleaning & Turbo Restoration:** Detergent package removes deposits, restores spray patterns, and keeps turbos responsive for sharper acceleration.
- • **Universal Diesel Engine Compatibility:** Works seamlessly with all diesel vehicles and equipment, including modern HPCR systems—one solution for your entire fleet.
- • **Powerful Cetane Boost for Smoother Rides:** Raises cetane up to +8 points for faster ignition and smoother combustion, unlocking your engine’s true potential.

## Overview

Archoil AR6500 Diesel Treatment is a premium additive designed to treat up to 400 gallons per 40 oz bottle, compatible with all diesel engines. It improves fuel lubricity by 43%, boosts cetane by up to 8 points for enhanced ignition and smoother combustion, cleans injectors, supports DPF health, and restores turbo responsiveness—delivering noticeable improvements in fuel economy, engine power, and longevity.

## Description

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

Review: Noticeable Performance Boost & Smoother Diesel Operation 🚛🔥 - The Archoil AR6500 Diesel Treatment is hands down one of the best diesel additives I’ve used. After adding it, I noticed smoother engine operation, quieter idle, and improved throttle response almost immediately ⚙️✨. The fact that the two-pack treats up to 800 gallons makes it a great value, especially for regular diesel use. It gives peace of mind knowing it helps with injector cleanliness, fuel system protection, and overall efficiency 🛢️💪. Easy to use, high quality, and delivers real results—this is now a staple for my diesel maintenance routine! 👍🚀
Review: Legit works! Boosted mpg, range, and power - 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.

## Features

- 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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09KS9JMDP |
| Best Sellers Rank | #169 in Automotive ( See Top 100 in Automotive ) #2 in Diesel Additives |
| Brand | Archoil |
| Customer Reviews | 4.7 4.7 out of 5 stars (3,002) |
| Date First Available | November 1, 2021 |
| Item Weight | 2.99 pounds |
| Item model number | AR6500-40 |
| Manufacturer | Archoil |
| Manufacturer Part Number | AR6500-40 |
| Package Dimensions | 13.3 x 7.8 x 3.46 inches |

## Images

![- Archoil AR6500 Diesel Treatment (40 Ounces) - Treats 400 Gallons - Additive for All Diesel Vehicles - Image 1](https://m.media-amazon.com/images/I/61PN0hNSMfL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: Can it be used in my vehicle?**
A: AR6500 is suitable for use in all diesel vehicles, including newer systems such as High Pressure Common Rail.

**Q: What's the difference between AR6500 Diesel Treatment and AR6400-D Diesel Fuel System Cleaner?**
A: AR6400-D is a one-tank treatment that rapidly deep cleans the entire fuel system. AR6500 is a on-going maintainance treatment that improves fuel quality at every fill-up. For best results, use both with the Diesel Fuel System Kit.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Noticeable Performance Boost & Smoother Diesel Operation 🚛🔥
*by M***A on December 29, 2025*

The Archoil AR6500 Diesel Treatment is hands down one of the best diesel additives I’ve used. After adding it, I noticed smoother engine operation, quieter idle, and improved throttle response almost immediately ⚙️✨. The fact that the two-pack treats up to 800 gallons makes it a great value, especially for regular diesel use. It gives peace of mind knowing it helps with injector cleanliness, fuel system protection, and overall efficiency 🛢️💪. Easy to use, high quality, and delivers real results—this is now a staple for my diesel maintenance routine! 👍🚀

### ⭐⭐⭐⭐⭐ Legit works! Boosted mpg, range, and power
*by B***B on September 23, 2025*

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.

### ⭐⭐⭐⭐⭐ Great products, love taking care of our diesel adding protection, performance. Competitive price.
*by F***C on November 27, 2025*

Great products, love taking care of our diesel adding protection, performance. Competitive price.

## Frequently Bought Together

- Archoil AR6500 Diesel Treatment (40.6 oz) - Treats 400 Gallons - Additive for All Diesel Vehicles
- Archoil AR9100 Friction Modifier Value Pack - Two 16oz Bottles of AR9100 for Two Powerstroke Treatments…
- Archoil AR6400-D Diesel Fuel System Cleaner (Two Pack) - Cleans Injectors, Turbo & DPF

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*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-02-26*