10 Best Diesel Fuel Additives 2025 in the UK

The STP Ultra 5 in 1 Diesel Fuel System Cleaner comes across as a comprehensive solution for diesel engine maintenance. Its concentrated cleaning power is designed to tackle deposits within the fuel delivery system, which can help in restoring lost power and improving engine performance. By enhancing lubricity and reducing friction, this product not only protects engine components from wear and tear but also works to lower diesel consumption, potentially leading to better fuel economy.

The inclusion of detergents and corrosion inhibitors further aids in maintaining a clean and smooth-running engine. Additionally, the product promises to reduce harmful emissions, making it a good fit for environmentally conscious users. However, while it offers a range of benefits, it should be noted that this product is best suited for routine maintenance rather than as a solution for severe engine issues. The 400 ml volume might be adequate for single-use or smaller engines but could be insufficient for larger vehicles or long-term treatment plans, requiring multiple purchases.

Users interested in a reliable diesel fuel additive that targets multiple engine concerns and enhances performance might find this product appealing, especially for regular maintenance purposes.

The Redex DPF Cleaner Diesel is specifically designed to maintain and clean Diesel Particulate Filters (DPFs), which is a crucial task to avoid costly repairs and reduce emissions. Its standout feature is its ability to clear soot blockages by lowering the combustion temperature, making it effective in preventing DPF clogging without needing higher engine temperatures. This can be especially beneficial for users who frequently drive short distances where the engine doesn’t heat up enough to naturally burn off soot.

Regarding ease of use, Redex offers a hassle-free application process with a bottle designed to pour directly into the fuel tank. This convenience is ideal for car owners who prefer a straightforward maintenance routine. The recommended usage is every 2-3 tanks of fuel, which ensures ongoing DPF cleanliness and efficiency.

Redex DPF Cleaner Diesel suits car owners primarily focused on DPF maintenance and those looking to prevent DPF-related issues cost-effectively. It is especially noted for its performance in DPF cleaning, indicating customer satisfaction. Users seeking a more all-encompassing diesel fuel additive may need to consider additional options.

The Redex Diesel Booster is a diesel fuel additive that aims to enhance engine performance and fuel economy, primarily through boosting the Cetane number by up to 2. Cetane is crucial for efficient combustion, and a higher number can lead to smoother engine performance and potentially better fuel efficiency. This makes it particularly appealing for diesel vehicle owners looking to get more out of their fuel.

One of its strengths is its versatility; it's suitable for all diesel engines and easy to use, as you only need to pour it directly into your fuel tank. This simplicity means it can be added frequently, helping to maintain optimal engine performance. It is widely recognized in the automotive sector, as indicated by its high sales rank and positive customer reviews, which suggests satisfaction among users.

The Redex Diesel Booster is a straightforward, widely appreciated solution for boosting cetane numbers, appealing to users focused on enhancing engine performance and fuel economy.