# Carlube QDC300 Diesel Clean Burn Fuel Additive, 300 ml

Carlube QDC300 Diesel Clean Burn is a liquid diesel fuel additive in a 300 ml size. The listing says it is intended to improve combustion and help keep fuel-system components clean, with claimed benefits for smoke and fuel economy.

- [Original product page](https://bargainpostbox.co.uk/product/carlube-qdc300-diesel-clean-burn-additive)
- [View offer](https://bargainpostbox.co.uk/visit/carlube-qdc300-diesel-clean-burn-additive)
- Market: UK
- Language: en-GB
- Currency: GBP
- Brand: Carlube
- Model: QDC300
- Category: Cars & Motorcycles > Auto Parts & Maintenance > Vehicle Oils & Fluids
- Price: 6.71 GBP
- Previous price: 10.18 GBP
- Discount: 34%
- Price checked: 2026-11-12T14:43:21.840Z
- Rating: 4.5 / 5
- Reviews: 13

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- The listing describes a diesel additive that supports combustion and helps maintain the cleanliness of fuel-system components.
- Claimed outcomes include reducing smoke and harmful emissions, but the listing provides no quantified results.

## Pros

- A single 300 ml liquid item is specified, so the pack size is clear.
- The stated purpose covers combustion and ongoing fuel-system cleanliness.

## Specifications

### Identity and format
- Brand: Carlube
- Model: QDC300
- Form: Liquid
- Item volume: 300 Millilitres
- Number of items: 1
### Dimensions and weight
- Dimensions listed: 8.9 x 3.7 x 19.7 cm; 296 g
- Weight listed: 0.3 Kilograms

## Before you buy

- The listing claims improvements to combustion, fuel economy, emissions and fuel-filter cleanliness, but gives no treatment dose, application instructions or quantified results. Check the product label and suitability for your vehicle before use.

## In the box

- Carlube QDC300 Diesel Clean Burn, 300 ml (Included)

## A good fit for

- Diesel vehicle owners seeking a liquid additive described as supporting combustion and fuel-system cleanliness.
- Buyers looking for a single 300 ml pack.

## Customer feedback

Aggregate ratings lean positive, with most ratings in the five-star category, but a smaller share are lower. This limited rating snapshot does not explain the reasons or establish how well the additive performs. For buyers considering the claimed smoke and fuel-system benefits, it is not a substitute for a stated treatment dose or measured results.

## Frequently asked questions

### What is Carlube QDC300 intended to do?
The listing describes it as a diesel additive that helps improve combustion and maintain fuel-system cleanliness. It also claims reduced smoke and emissions, without providing measured results.
### How much product is listed?
The item volume is listed as 300 Millilitres, with one item specified.
### Are application instructions or a treatment dose provided?
No dose or application instructions are included in the supplied product details. Check the product label and vehicle suitability before use.

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## Add-ons

- [Redex Diesel Fuel System Cleaner 250ml, Diesel Additives To Remove Harmful Emissions, Maximise Performance & Increase Fuel Economy Fuel Additives For Diesel Engines, Suitable For Hybrids](https://bargainpostbox.co.uk/visit/carlube-qdc300-diesel-clean-burn-additive)

## Images

![Carlube QDC300 Diesel Clean Burn Fuel Additive, 300 ml — 1](https://bargainpostbox.co.uk/i/zQ0bme-kpkLW2Kr7OHv9cUKGYXJnspSJV9VIaKa6HxFp0Gr-6qYrGMT7TFNzoBfdgT72JpLshZtSQ0M6ry5LxYpey2gVDez6McQmkMvAlYMunFjq8-ECo3mX.jpg)

![Carlube QDC300 Diesel Clean Burn Fuel Additive, 300 ml — 2](https://bargainpostbox.co.uk/i/e3wt8VjNRrnB3VSQthQVy8GCGbhpb5Ou2nzU7XyAfVRKHGWB432LEIM9_Kmw0TW39rExrb22r2gKo7yBUQ4rqZ-Y2hECBF6FPj2g-AspS5wFVR_AE-eTpJT7.jpg)

![Carlube QDC300 Diesel Clean Burn Fuel Additive, 300 ml — 3](https://bargainpostbox.co.uk/i/DpE98062v_GTjowJh_fiy3zGwydV5LVEjF-ZefQc0__-K2JnTWOf3yq0vxo3CCVUs_5vEkj1wfek3KLSrN7lrtKskJ4yOdQ4wN-8IAA58rGdt12VMnUJdf9d.jpg)

![Carlube QDC300 Diesel Clean Burn Fuel Additive, 300 ml — 4](https://bargainpostbox.co.uk/i/twdWYskaefyi0WIKDstyMZPxgXGLbGMKDBD4Q5iaped9MyIH0GDOolyfowErmII3nJpp1Weg4iTQNlGQ54bKJyYmxOvUoNHx4E6BVwacpk85u0C4VIzTsls5.jpg)

![Carlube QDC300 Diesel Clean Burn Fuel Additive, 300 ml — 5](https://bargainpostbox.co.uk/i/k5ooB39ztxkRQ4PexAeM8as9Vd5ug2WDUXtUdTlkoRUehfN-VjdZLuwNlhCnfH_JP1GVp3mYUBZnzwEslr4fJM2FnOMX-pFuooMK3F0tzOmxLwTm9K4X_oLn.jpg)

![Carlube QDC300 Diesel Clean Burn Fuel Additive, 300 ml — 6](https://bargainpostbox.co.uk/i/tDzP9uskGCK7Lyl9acjgUDcqx4bKMLztuD178_QrxWFwHSy3T260FeMcGDlzP0gRokjSjWsfsmUtoZtJf5bmlRsnVHz57pMfqfbMtN8UZpKrl_A94X2wCrR2.jpg)

![Carlube QDC300 Diesel Clean Burn Fuel Additive, 300 ml — 7](https://bargainpostbox.co.uk/i/nCILta7ddetGwppbUnQ4epPVi2VRSHF1JotdTw2CpcyiEpMMYk1Sv4MiAr5D7vwKz2PbWsmOTvxdE76T8QRVEgJzjxl2HlAD4H03Jq4v43Ys_qPDbbmzukFd.jpg)