---
product_id: 313491708
title: "AR6500 Diesel Treatment (10.1 oz) - Four Pack - Treats 400 Gallons - Additive for All Diesel Vehicles…"
price: "16593 kr"
currency: ISK
in_stock: true
reviews_count: 8
url: https://www.desertcart.is/products/313491708-ar6500-diesel-treatment-10-1-oz-four-pack-treats-400
store_origin: IS
region: Iceland
---

# Cleans & protects fuel system including HPCR Boosts cetane for power & throttle response Treats 400 gallons per 4-pack AR6500 Diesel Treatment (10.1 oz) - Four Pack - Treats 400 Gallons - Additive for All Diesel Vehicles…

**Price:** 16593 kr
**Availability:** ✅ In Stock

## Summary

> 🚛 Power up your diesel, dominate the road, and never settle for less!

## Quick Answers

- **What is this?** AR6500 Diesel Treatment (10.1 oz) - Four Pack - Treats 400 Gallons - Additive for All Diesel Vehicles…
- **How much does it cost?** 16593 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/313491708-ar6500-diesel-treatment-10-1-oz-four-pack-treats-400)

## 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

- • **Smooth Operator:** Experience quieter idling and smoother diesel engine performance from the very first use.
- • **Power Your Drive:** Advanced cetane boost technology enhances combustion for sharper throttle response and increased engine power.
- • **Maximize Every Drop:** Each 10.1 oz bottle treats 100 gallons, delivering long-lasting value across 400 gallons per pack.
- • **Efficiency Unleashed:** Proven to improve fuel economy and extend driving range, helping you hit higher MPG milestones and reduce refueling stops.
- • **Fuel System Guardian:** Cleans, lubricates, and protects critical fuel components, including high-pressure common rail (HPCR) systems, ensuring longevity.

## Overview

Archoil AR6500 Diesel Treatment is a premium additive designed for all diesel vehicles, offering a potent cetane boost and advanced combustion modifiers. Each 10.1 oz bottle treats 100 gallons, with this four-pack covering 400 gallons total. It cleans and lubricates fuel systems—including HPCR setups—resulting in smoother engine operation, improved throttle response, enhanced fuel economy, and extended engine life. Trusted by diesel enthusiasts for noticeable performance gains and fuel efficiency improvements.

## Description

Buy Archoil AR6500 Diesel Treatment (10.1 oz) - Four Pack - Treats 400 Gallons - Additive for All Diesel Vehicles…: Automotive - 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

- Four Pack- Each 10.1oz bottle treats 100 gallons
- 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)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | Archoil |
| Brand | Archoil |
| Item Weight | 3.89 pounds |
| Product Dimensions | 12 x 5 x 5 inches |
| Manufacturer Part Number | AR6500-16-2P |

## 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.

### ⭐⭐⭐⭐⭐ Increased MPG
*by K***E on November 15, 2025*

Excellent product. Performs as stated

## 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 Iceland*
*Store origin: IS*
*Last updated: 2026-02-10*