---
product_id: 50719139
title: "Archoil AR6900-D MAX Advanced Diesel Additive Concentrate - 500ml"
brand: "archoil"
price: "222 Lei"
currency: RON
in_stock: true
reviews_count: 8
category: "Archoil"
url: https://www.desertcart.ro/products/50719139-archoil-ar6900-d-max-advanced-diesel-additive-concentrate-500ml
store_origin: RO
region: Romania
---

# Boosts cetane for super diesel performance Professional-grade multi-detergent cleaning Lowers harmful emissions & particulates Archoil AR6900-D MAX Advanced Diesel Additive Concentrate - 500ml

**Brand:** archoil
**Price:** 222 Lei
**Availability:** ✅ In Stock

## Summary

> ⛽ Elevate your diesel game — because your engine deserves the best!

## Quick Answers

- **What is this?** Archoil AR6900-D MAX Advanced Diesel Additive Concentrate - 500ml by archoil
- **How much does it cost?** 222 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/50719139-archoil-ar6900-d-max-advanced-diesel-additive-concentrate-500ml)

## 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

- • **Eco-Smart Fuel Care:** Reduces harmful exhaust emissions and particulates for a cleaner ride and greener footprint
- • **Supercharge Your Diesel:** Transforms low-quality fuel into high-performance Super Diesel with premium 2-EHN cetane improver
- • **All-in-One Fuel Solution:** Includes lubricants, stabilizers, water removers & combustion catalysts for comprehensive engine protection
- • **Trusted Professional Grade:** Backed by over a decade of success, with Performance & Emissions Pass Guarantee
- • **Engine Wellness, Guaranteed:** Cleans fuel system, injectors, DPF, EGR, turbo & exhaust for smoother, more responsive driving

## Overview

Archoil AR6900-D MAX is a 500ml advanced diesel additive concentrate that converts standard diesel into high-performance Super Diesel. Featuring a premium UK-made 2-EHN cetane improver, multi-detergent cleaning agents, lubricants, and combustion catalysts, it cleans and protects all diesel engine components including injectors, DPF, EGR, turbo, and exhaust. This additive improves fuel economy, reduces harmful emissions, and is fully compliant with BS EN 590, REACH & CLP standards. Trusted by professionals for over 10 years, it treats up to 500 liters of fuel and comes with a Performance and Emissions Pass Guarantee.

## Description

Buy Archoil AR6900-D MAX Advanced Diesel Additive Concentrate - 500ml | Super Diesel Fuel Converter - Cetane Booster, Injector Cleaner, DPF & EGR Treatment - Treats 500 Litres of Fuel at desertcart UK. Free delivery on eligible orders.

Review: Excellent diesel additive, improves performance & starting. - Excellent additive, been using Red x diesel in every tank since I bought my car, was recommended to by dealer. Was an ex demo SUV, had car 10 years, 2.2d turbo intercooler, 178PS , usually get 48 mpg per tank, car can do 0.60 mph in 9.9 seconds though rarely have I attempted that!! lol Keep car serviced annually as per manufacturers service schedule. Kerb weight is 1700kg without driver, a fairly heavy car, performance & economy has always been outstanding, in my opinion, hence decided to keep this car until it starts costing too much for servicing. As Red x seems too expensive now, thought I'd try something else, read reviews on here, and decided upon Archoil AR6900-D and I'm not disappointed. Archoil AR6900-D is exceptional, in my opinion, whilst I wasn't looking for more performance, I've got it, feel like I've suddenly got a sports car. For my car it worked instantly, been overtaking everything in sight. So easy to use, was going on a 200 mile journey, so thought a good test for this. So simple and easy to measure via a cap within a cap, I.E., the outer cap unscrews which is essentially a cover for a nozzle, pour it in then add fuel like I used to do with Red X. As this is my first use of this over a fairly decent journey, I'm ditching Red X, that's for sure, I used more fuel, as was enjoying the overtaking and acceleration so much. The journeys economy dropped to 45 mpg, still acceptable to me, as enjoyed the extra performance, and the engine feels more smooth and quieter. As some other respondents have mentioned, starting a diesel can be an issue, that's been the only downside of this car, it's never liked starting from cold, always starts first time after engine warmed up, had similar issue on all previous diesels, though not as bad as this one. Usually takes at least 2 attempts in summer, 3-4 in winter. Was same when new, was informed about this by the dealer, have to let car idle for 5 mins also before driving also to allow oil to lubricate the turbo, have started from cold several times since adding Archoil, and it starts first time every time. As of writing this in UK in July 2026 it is hotter than usual for us in south England, and it did used to start better when hot outside, but it has never started first time before. The real test will be winter, but any improvement will be helpful. Rather than needing a new costly battery every 2 years, if this helps starting as much has it has already, I'll be saving loads of money, it's also possible this additive may even extend the life of the car.
Review: Like super diesel but better - Works really well, I have been using this for the last 130k, like using super disel but better. VW T6 starts better, ticks over more smoothly and gives smoother running and a little more power. Van now Done 230k and still going strong.

## Features

- Harmful if inhaled.
- Harmful if swallowed.
- Harmful in contact with skin.
- Repeated exposure may cause skin dryness or cracking.
- Risk of explosion if heated under confinement
- Toxic to aquatic life with long lasting effects.
- AR6900-D MAX converts low-quality supermarket diesel into high-performing Super Diesel Fuel using a carefully selected blend of pure 2-EHN cetane improver, multiple detergents, ester lubricant, stabiliser and combustion catalyst.
- Suitable for all diesel engines and delivers ongoing Fuel System, Fuel Injector, DPF, EGR, CAT, Turbo and Exhaust cleaning.
- Maintain engine performance and fuel economy. Lower harmful exhaust emissions and particulates.
- Multiple detergents and post-combustion fuel-borne catalysts deliver a proprietary blend of Professional Grade Cleaning. Now you can reduce the chance of engine problems while enjoying a smoother and more responsive engine.
- Proven Cetane Improver using the highest purity UK-manufactured 2-EHN, proprietary ester lubricant, water remover and much more.
- All Archoil fuel cleaners include professional support with a Performance and Emissions Pass Guarantee. Over a decade of success and trusted by professionals.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Asin | B01IDD99T8 |
| Best Sellers Rank | 165 in Automotive (See Top 100 in Automotive) 8 in Fuel Systems |
| Brand | Archoil |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,831) 4.6 out of 5 stars |
| Date First Available | 12 July 2016 |
| Delivery Information | We cannot deliver certain products outside mainland UK ( Details). We will only be able to confirm if this product can be delivered to your chosen address when you enter your delivery address at checkout. |
| Guaranteed Software Updates Until | unknown |
| Item Weight | 550 g |
| Manufacturer | Archoil |
| Manufacturer Part Number | AR6900 D |
| Manufacturer Reference | AR6900 D |
| Model | AR6900-D Max |
| Product Dimensions | 13.5 x 7 x 25 cm; 550 g |

## Images

![Archoil AR6900-D MAX Advanced Diesel Additive Concentrate - 500ml - Image 1](https://m.media-amazon.com/images/I/719TozWYgzL.jpg)
![Archoil AR6900-D MAX Advanced Diesel Additive Concentrate - 500ml - Image 2](https://m.media-amazon.com/images/I/71RAgAWNs9L.jpg)
![Archoil AR6900-D MAX Advanced Diesel Additive Concentrate - 500ml - Image 3](https://m.media-amazon.com/images/I/81TVTl5rpCL.jpg)
![Archoil AR6900-D MAX Advanced Diesel Additive Concentrate - 500ml - Image 4](https://m.media-amazon.com/images/I/71ofwEZuqDL.jpg)
![Archoil AR6900-D MAX Advanced Diesel Additive Concentrate - 500ml - Image 5](https://m.media-amazon.com/images/I/81VOIOrRrKL.jpg)

## Questions & Answers

**Q: Can these be refilled using the 5 litre version?**
A: Hi, these are not refillable.

**Q: How much is used per tank of diesel fuel ?**
A: 10ml for every 10 litres of fuel.  For example, a 60L tank would require 60ml.

**Q: can anyone tell me the mpg increase they got using this if any  ?**
A: I have been using this now for 8 years. My MPG has increased from 23 to 28 with a 1996 Fiat 2.5 in a 3,400 kg motorhome. That is equivalent to about 20% improvement one free gallon for every five. The first couple of doses saves the price of the complete bottle. You are effectively paid to use it. Performance is also enhanced with down gearchanges nearer the top of hills or not at all.
Fuel consumption is calculated on full-tank to empty-tank miles. I can achieve 50MPH by the time I reach the end of a motorway downhill slip-way where before it would be about 40.
If you're sceptical, try it - I was but I'm glad I overcame that. 
I've just ordered another bottle.
I've just bought a Fiat Doblo 1.9 diesel - I'll try it in that next.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent diesel additive, improves performance & starting.
*by S***R on 7 July 2026*

Excellent additive, been using Red x diesel in every tank since I bought my car, was recommended to by dealer. Was an ex demo SUV, had car 10 years, 2.2d turbo intercooler, 178PS , usually get 48 mpg per tank, car can do 0.60 mph in 9.9 seconds though rarely have I attempted that!! lol Keep car serviced annually as per manufacturers service schedule. Kerb weight is 1700kg without driver, a fairly heavy car, performance & economy has always been outstanding, in my opinion, hence decided to keep this car until it starts costing too much for servicing. As Red x seems too expensive now, thought I'd try something else, read reviews on here, and decided upon Archoil AR6900-D and I'm not disappointed. Archoil AR6900-D is exceptional, in my opinion, whilst I wasn't looking for more performance, I've got it, feel like I've suddenly got a sports car. For my car it worked instantly, been overtaking everything in sight. So easy to use, was going on a 200 mile journey, so thought a good test for this. So simple and easy to measure via a cap within a cap, I.E., the outer cap unscrews which is essentially a cover for a nozzle, pour it in then add fuel like I used to do with Red X. As this is my first use of this over a fairly decent journey, I'm ditching Red X, that's for sure, I used more fuel, as was enjoying the overtaking and acceleration so much. The journeys economy dropped to 45 mpg, still acceptable to me, as enjoyed the extra performance, and the engine feels more smooth and quieter. As some other respondents have mentioned, starting a diesel can be an issue, that's been the only downside of this car, it's never liked starting from cold, always starts first time after engine warmed up, had similar issue on all previous diesels, though not as bad as this one. Usually takes at least 2 attempts in summer, 3-4 in winter. Was same when new, was informed about this by the dealer, have to let car idle for 5 mins also before driving also to allow oil to lubricate the turbo, have started from cold several times since adding Archoil, and it starts first time every time. As of writing this in UK in July 2026 it is hotter than usual for us in south England, and it did used to start better when hot outside, but it has never started first time before. The real test will be winter, but any improvement will be helpful. Rather than needing a new costly battery every 2 years, if this helps starting as much has it has already, I'll be saving loads of money, it's also possible this additive may even extend the life of the car.

### ⭐⭐⭐⭐⭐ Like super diesel but better
*by S***L on 26 August 2026*

Works really well, I have been using this for the last 130k, like using super disel but better. VW T6 starts better, ticks over more smoothly and gives smoother running and a little more power. Van now Done 230k and still going strong.

### ⭐⭐⭐⭐ Undecided if works
*by B***E on 4 April 2026*

I like the bottle and how to fill, unsure if it made much difference. Good for occasional use with a tank of diesel. Use better diesel in the first place and you won't need this.

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---

*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-08-31*