---
product_id: 313491708
title: "AR6500 Diesel Treatment (10.1 oz) - Four Pack - Treats 400 Gallons - Additive for All Diesel Vehicles…"
brand: "archoil"
price: "€ 157.07"
currency: EUR
in_stock: true
reviews_count: 13
category: "Archoil"
url: https://www.desertcart.com.cy/products/313491708-ar6500-diesel-treatment-10-1-oz-four-pack-treats-400
store_origin: CY
region: Cyprus
---

# Improves lubricity by 43% Boosts cetane by +8 points Treats 400 gallons total AR6500 Diesel Treatment (10.1 oz) - Four Pack - Treats 400 Gallons - Additive for All Diesel Vehicles…

**Brand:** archoil
**Price:** € 157.07
**Availability:** ✅ In Stock

## Summary

> 🚛 Power up your diesel game — smoother rides, longer range, zero compromises!

## Quick Answers

- **What is this?** AR6500 Diesel Treatment (10.1 oz) - Four Pack - Treats 400 Gallons - Additive for All Diesel Vehicles… by archoil
- **How much does it cost?** € 157.07 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.cy](https://www.desertcart.com.cy/products/313491708-ar6500-diesel-treatment-10-1-oz-four-pack-treats-400)

## Best For

- archoil enthusiasts

## Why This Product

- Trusted archoil brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Powerful Cetane Boost:** Raises cetane by up to 8 points for faster ignition and smoother, more responsive drives.
- • **Quad-Pack Convenience:** Four 10.1 oz bottles for easy dosing & storage—fuel up without the hassle.
- • **Injector & Turbo Cleaner:** Detergent formula cleans injectors and turbo, restoring peak spray patterns and turbo boost.
- • **DPF Support & Fuel Economy:** Reduces DPF regens and soot buildup, extending filter life while improving mileage and performance.
- • **Universal Diesel Compatibility:** Works seamlessly with all diesel engines, from pickups to heavy-duty rigs and modern HPCR systems.

## Overview

Archoil AR6500 Diesel Treatment is a premium additive pack designed to treat up to 400 gallons of diesel fuel. It enhances engine performance by boosting cetane up to 8 points, improving lubricity by 43%, and cleaning injectors and turbo components. Compatible with all diesel engines including modern HPCR systems, it supports DPF health by reducing soot and regeneration frequency, resulting in better fuel economy, smoother acceleration, and extended engine life.

## Description

Buy Archoil AR6500 Diesel Treatment (10.1 oz) - Four Pack - 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 TO USE AND STORE (4-Pack): Includes four 10 oz bottles for convenient storage and quick dosing; add directly to the fuel tank before fill-up. Each bottle treats up to 100 gallons (400 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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B093Y9HKK5 |
| Best Sellers Rank | #186 in Automotive ( See Top 100 in Automotive ) #2 in Diesel Additives |
| Brand | Archoil |
| Customer Reviews | 4.7 4.7 out of 5 stars (3,036) |
| Date First Available | May 1, 2021 |
| Item Weight | 3.89 pounds |
| Manufacturer | Archoil |
| Manufacturer Part Number | AR6500-16-2P |
| Product Dimensions | 12 x 5 x 5 inches |

## Images

![AR6500 Diesel Treatment (10.1 oz) - Four Pack - Treats 400 Gallons - Additive for All Diesel Vehicles… - Image 1](https://m.media-amazon.com/images/I/71ItT+FWI8L.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 (10.1 oz) - Four Pack - Treats 400 Gallons - Additive for All Diesel Vehicles…
- Archoil AR6400-D Diesel Fuel System Cleaner (Two Pack) - Cleans Injectors, Turbo & DPF
- Archoil Diesel Fuel System Kit - AR6500 Diesel Treatment (40 oz) + AR6400-D Diesel Fuel System Cleaner

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*Product available on Desertcart Cyprus*
*Store origin: CY*
*Last updated: 2026-03-14*