Fuel and Oil Additives

Fuel Additives and Cleaners at Halfords

Some of us want a little more performance out of our engines. Fuel additives and oil additives give your engines a little extra. Oil additives improve the smoothness of your engine, giving your existing oil a boost. Fuel additives can improve efficiency and power, lowering emissions and maintaining your engine. At Halfords, we’ve got a large stock of fuel additives and cleaners, including both fuel and oil additives suitable for diesel and petrol cars and vans.

We carry engine additives from well-known brands including Millers, Redex, and Wynns that have been tested to perform. Online, you can compare fuel additives and cleaners, read user reviews, and get an inside view on what works best for your needs.

Our complete range of fuel additives, cleaners and oil additives, along with internal cleaners, are part of our engine oils and fluids selection available online or instore.

Before using a fuel additive, we recommend using an engine cleaner to rid your engine of any nasties that might have built up. As well as additives for engines, we’ve got specific cleaners for fuel injectors and carburettors - opens in a new tab, EGR cleaners and catalytic converter cleaners - opens in a new tab that will have your car running smoothly in no time. They’re easy to use, but we advise you to follow all instructions to the letter to avoid causing any damage to your vehicle.

Does Redex Diesel Work Yes, Redex Diesel Fuel Additive is designed to clean the fuel system of diesel engines, improving engine efficiency, reducing emissions, and helping to maintain power. By removing carbon deposits and restoring optimal fuel flow, Redex diesel fuel additive can help reduce fuel consumption and improve engine performance. It's widely trusted by both mechanics and car owners alike to help improve the longevity and performance of diesel engines.

How to Use Wynns EGR Cleaner

Using Wynns EGR Cleaner is simple, but it’s crucial to follow the instructions carefully for the best results. Start by removing the intake hose from the EGR valve. With the engine running, spray the Wynns EGR Cleaner directly into the intake while keeping the engine at a steady idle speed. The cleaner will dissolve carbon build-up within the EGR valve and surrounding areas.

After using the cleaner, it’s important to drive the vehicle for a short distance to allow the engine to properly burn off any remaining residue. Always ensure you follow the safety precautions listed on the label to prevent damage to the engine.