---
product_id: 49425115
title: "40003 Fuel Treatment - 1 Litre, Tan"
brand: "lucas oil"
price: "437 kr"
currency: DKK
in_stock: true
reviews_count: 13
category: "Lucas Oil"
url: https://www.desertcart.dk/products/49425115-40003-fuel-treatment-1-litre-tan
store_origin: DK
region: Denmark
---

# Boosts fuel efficiency +7% MPG Neutralizes low sulfur fuel issues Cleans & lubricates fuel system 40003 Fuel Treatment - 1 Litre, Tan

**Brand:** lucas oil
**Price:** 437 kr
**Availability:** ✅ In Stock

## Summary

> ⛽ Power up your ride, save fuel, and stay ahead of the pack!

## Quick Answers

- **What is this?** 40003 Fuel Treatment - 1 Litre, Tan by lucas oil
- **How much does it cost?** 437 kr with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.dk](https://www.desertcart.dk/products/49425115-40003-fuel-treatment-1-litre-tan)

## Best For

- lucas oil enthusiasts

## Why This Product

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

## Key Features

- • **Engine TLC:** Deep cleans and lubricates injectors and pumps for smoother performance.
- • **Low Sulfur Savior:** Neutralizes harmful effects of low sulfur fuels to protect your engine’s longevity.
- • **Maximize Your MPG:** Experience up to 7% better fuel economy with every tank.
- • **Eco-Smart Combustion:** Reduces emissions by promoting more complete fuel burn.
- • **Universal Compatibility:** Works seamlessly with petrol & diesel, carburetted or fuel-injected engines.

## Overview

Lucas Oil 40003 Fuel Treatment is a premium 1-litre additive designed to clean and lubricate fuel systems, boost fuel economy by up to 7%, and neutralize low sulfur fuel problems. Compatible with petrol and diesel engines, it enhances combustion efficiency, reduces emissions, and extends the life of pumps and injectors, making it a must-have for drivers seeking performance and savings.

## Description

Lucas Fuel Treatment is a powerful blend of oils and additives that contain no SOLVENTS. It is designed to increase power and fuel economy while also lowering exhaust emissions through a more complete combustion. Formulated for both petrol and diesel engines, carburetted or fuel injected. It gives your fuel system what it really needs – a blend of super slick oils and additives with a high detergent action that allows the engine to operate at maximum efficiency. It also cleans and lubricates the carburettor and injectors and causes the fuel to burn more thoroughly for increased power and less fuel consumption. It totally neutralises the harmful effects of low sulphur diesel fuel and can be used to pass MOT emissions tests.

Review: Good additive - I do quite a lot of stop start driving, the engine rarely gets a proper blow out, plus I use supermarket fuels which tend to be cheaper but have less additives than brands. This additive compensates for the ‘negative’ factors and is resulting in mpg figures of around 7% better than officially published, which is amazing. I think it works.
Review: Good Stuff. - one of the few products that actually works, good value if bought in big bottle. A bit thick once cold so take that into account before pouring to a tank. Using this on Peugeot 508 2.0 hdi 140 FAP without any FAP issues. No increase in mileage but engine sounds smoother. Will continue using.

## Features

- Cleans and lubricates the fuel system
- Neutralises low sulphur fuel problems
- Increases the life of pumps and injectors
- Lubricates fuel for increased MPG

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000ARPVOI |
| Best Sellers Rank | 13,340 in Automotive ( See Top 100 in Automotive ) 148 in Fuel Systems |
| Brand | Lucas Oil |
| Customer Reviews | 4.5 4.5 out of 5 stars (6,546) |
| Date First Available | 24 Nov. 2010 |
| Exterior | Painted |
| Item Weight | 898 g |
| Item model number | LUC10003 |
| Manufacturer | Lucas Oil Products Inc |
| Manufacturer part number | 10003 |
| Model | 40001 |
| OEM Part Number | 10003 |
| Product Dimensions | 8.38 x 8.38 x 8.38 cm; 898 g |

## Product Details

- **Brand:** Lucas Oil
- **Liquid volume:** 1 Quarts
- **Package information:** Bottle
- **UPC:** 049807400033 049807100032
- **Vehicle service type:** Car, Truck

## Images

![40003 Fuel Treatment - 1 Litre, Tan - Image 1](https://m.media-amazon.com/images/I/616euPEi4YL.jpg)

## Available Options

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

## Questions & Answers

**Q: How much should I pour in the tank for a first use?**
A: If tank is empty, add quarter of it to tank. Drive then fill up at pump. Or you can add more if you wish, but watch out if adding too much. I had my car misfire once because I added all of contents. And it was a 5.0 m5, this stuff can be tough for the fuel pump

**Q: Is this for Diesel engines?**
A: I have used LUCAS UPPER CYLINDER LUBRICANT  since 2005 on last 3 diesel  cars and have found it invaluable in fuel economy,power and cleanliness of emissions.My cars have been over 8yrs old and would recommend it to all...My local taxi drivers swear by it...

**Q: Does this treatment protect your vehicle from the effects of E10 (10%) ethanol fuel?**
A: Would surmise, as a fuel "Cleaner" it would do the same on E10 as with other petrol fuels E5 etc. 
Although NOT 100% sure ( question the actual manufactures by email ), it would not deter myself from continuing to use it.
Sorry, a bit ambiguous, or try a local chemisrty lab. hope this is Some help. Loopy75.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Good additive
*by P***Z on 12 August 2025*

I do quite a lot of stop start driving, the engine rarely gets a proper blow out, plus I use supermarket fuels which tend to be cheaper but have less additives than brands. This additive compensates for the ‘negative’ factors and is resulting in mpg figures of around 7% better than officially published, which is amazing. I think it works.

### ⭐⭐⭐⭐⭐ Good Stuff.
*by J***N on 13 November 2020*

one of the few products that actually works, good value if bought in big bottle. A bit thick once cold so take that into account before pouring to a tank. Using this on Peugeot 508 2.0 hdi 140 FAP without any FAP issues. No increase in mileage but engine sounds smoother. Will continue using.

### ⭐⭐⭐⭐⭐ Great booster additive. Way more power and there's loads in the bottle.
*by P***B on 12 September 2016*

Bought this as my 4x4 sprang a fuel tank leak just before a 2 week camping holiday. Meant we had to use the other car, our battered trusty old Subaru Forester, 2.0 petrol. My Rexton pulls upto 3.5 Tonne legally and it is an excelent tower. The Subaru is a good car but has no pull at the lower revs so towing is a trudge through the gears, especially in the hills an we were off to Dorset and North Devon, 5-6 hour drive away from home. North Devon is all hills and steep valleys, lovely but a stern test for our old Forester. This really did give a big bost to the car. The difference with and withought the trailer was great, much less gear changing as there was so much more pull even up those steep Devon valleys and great for overtaking the slow towers (I don't overtake when I have my trailer on). The only negative is the ridiculous bottle it comes in. There's no way to seal it back up as the strange blue cap just slips off. I used the pull off tab as a stopper. I kept it inside the lid and screwed it down tightly and just removed the tab when I was filling the car up again. Even so it was impossible to keep it in the bottle as we drove. It doesn't smell as evil as the other boosters/cleaners I've used but if you don't wear gloves then Swafeega just about gets it off. Had about a fifth of the bottle left when we got home so I put it in the quarter of a tank of diesel in the Rexton, these have a 2.7L Merc engine. It's powerful already but with this stuff it's really good fun. :) It's an auto but with this stuff in the bugger was spinning its' wheels as I pulled off at junctions. Makes a huge difference to the pull of the petrol and the diesels I have. No idea if it cleaning as it goes but it's good fun. :)

## Frequently Bought Together

- Lucas Oil 10003 Fuel Treatment - 1 Quart
- Lucas Oil 10130 Pure Synthetic Oil Stabilizer - 1 Quart
- Lucas Oil 10512 Deep Clean Fuel System Cleaner - 16 Ounce

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*Product available on Desertcart Denmark*
*Store origin: DK*
*Last updated: 2026-02-02*