---
product_id: 65090377
title: "Fuel Ox Complete Fuel Treatment and Combustion Catalyst - Additive for Gas or Diesel - Increases Mileage and Decreases Regens - for Personal or Commercial Vehicles - Treats 240 Gallons - 3oz Bottle"
brand: "the fuel ox"
price: "€ 39.47"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.fi/products/65090377-fuel-ox-complete-fuel-treatment-and-combustion-catalyst-additive-gas
store_origin: FI
region: Finland
---

# Fuel Ox Complete Fuel Treatment and Combustion Catalyst - Additive for Gas or Diesel - Increases Mileage and Decreases Regens - for Personal or Commercial Vehicles - Treats 240 Gallons - 3oz Bottle

**Brand:** the fuel ox
**Price:** € 39.47
**Availability:** ✅ In Stock

## Quick Answers

- **What is this?** Fuel Ox Complete Fuel Treatment and Combustion Catalyst - Additive for Gas or Diesel - Increases Mileage and Decreases Regens - for Personal or Commercial Vehicles - Treats 240 Gallons - 3oz Bottle by the fuel ox
- **How much does it cost?** € 39.47 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/65090377-fuel-ox-complete-fuel-treatment-and-combustion-catalyst-additive-gas)

## Best For

- the fuel ox enthusiasts

## Why This Product

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

## Description

Full description not available

## Features

- ✔ CUTS REGENERATIONS AND EMISSIONS : Fuel Ox fuel treatment contains a patented combustion catalyst that provides an earlier ignition and a more thorough and cleaner burn of fuel. With more fuel burned in the combustion cycle, less soot, smoke, or emissions are produced that clog and fill diesel particulate filters (DPFs) that initiates the regen cycle.
- ✔ CAN INCREASE FUEL ECONOMY BY 7-10% : Fuel Ox contains a patented combustion catalyst that provides a more complete combustion. This allows for more productive burn of fuel.
- ✔ 1OZ TREATS UP TO 80 GALLONS OF GAS OR DIESEL : Fuel Ox has a highly concentrated formula that treats both gas or diesel for a small and convenient inventory.
- ✔ PROTECTS AGAINST ETHANOL : Fuel Ox coats fuel tank and system to prevent corrosion from ethanol found in gasoline.
- ✔ LUBRICATES AND CLEANS ENGINE : Fuel Ox fuel conditioner replenishes lubricity that is missing in today's Ultra Low Sulfur Diesel (ULSD). It lubricates upper cylinder heads and injectors. Fuel Ox fuel additive also contains detergents to clean fuel lines, tank, and system.
- ›See more product details

## Images

![Fuel Ox Complete Fuel Treatment and Combustion Catalyst - Additive for Gas or Diesel - Increases Mileage and Decreases Regens - for Personal or Commercial Vehicles - Treats 240 Gallons - 3oz Bottle - Image 1](https://m.media-amazon.com/images/I/81E5YI1rRhL.jpg)
![Fuel Ox Complete Fuel Treatment and Combustion Catalyst - Additive for Gas or Diesel - Increases Mileage and Decreases Regens - for Personal or Commercial Vehicles - Treats 240 Gallons - 3oz Bottle - Image 2](https://m.media-amazon.com/images/I/7172wumMHBL.jpg)
![Fuel Ox Complete Fuel Treatment and Combustion Catalyst - Additive for Gas or Diesel - Increases Mileage and Decreases Regens - for Personal or Commercial Vehicles - Treats 240 Gallons - 3oz Bottle - Image 3](https://m.media-amazon.com/images/I/81LJNtJK10L.jpg)
![Fuel Ox Complete Fuel Treatment and Combustion Catalyst - Additive for Gas or Diesel - Increases Mileage and Decreases Regens - for Personal or Commercial Vehicles - Treats 240 Gallons - 3oz Bottle - Image 4](https://m.media-amazon.com/images/I/81zWyBKTJ-L.jpg)
![Fuel Ox Complete Fuel Treatment and Combustion Catalyst - Additive for Gas or Diesel - Increases Mileage and Decreases Regens - for Personal or Commercial Vehicles - Treats 240 Gallons - 3oz Bottle - Image 5](https://m.media-amazon.com/images/I/91gmVRnj1CL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐ 







  
  
    Temporary solution but problem came back after 2 weeks.
  

*by G***E on Reviewed in the United States on October 16, 2018*

I used the entire bottle over the span of a month. I tried the recommended ratio of product to gasoline and it did nothing. Then I tried to increase the ratio to make it stronger, eventually the check engine light turned off and on a few times. The last time it stayed off for 2 weeks and eventually came back on permanently. This product is good to try if you are trying to pass inspection. It may or may not work, but even if it does, its only going ro be temporarily, don't expect the problem to go away.

### ⭐⭐⭐⭐⭐ 







  
  
    Best fuel additive on the market!
  

*by N***Y on Reviewed in the United States on August 23, 2018*

Amazing product!!!! What a difference I saw after just a couple of weeks. It has now been months since I started using Fuel Ox and I couldn’t be happier with the results. Compared to all other additives I’ve used, this one is BY FAR the best- nothing else even comes close. I’m getting better MPG and fewer emissions, this stuff really cleaned out the entire fuel system in my truck! My brother is now using it as well and says his old car is running better than ever before. Really compact and convenient size too! Will definitely be buying again!!!!

### ⭐⭐⭐⭐⭐ 







  
  
    Use a little for big results
  

*by V***5 on Reviewed in the United States on May 9, 2019*

It takes very small amount to feel the results in your engine. Over time ethanol may damage your vehicle. Fuel Ox has performed as advertised for both my 2002 GMC Sierra and my 2002 Chevrolet Tahoe. I will be purchasing more.

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**Shop now:** [https://www.desertcart.fi/products/65090377-fuel-ox-complete-fuel-treatment-and-combustion-catalyst-additive-gas](https://www.desertcart.fi/products/65090377-fuel-ox-complete-fuel-treatment-and-combustion-catalyst-additive-gas)

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-03-17*