10 bestDiesel Fuel Additivesof April 2025
112M consumers helped this year.
50% off
1
Redex DPF Cleaner Diesel, DPF Diesel Particulate Filter Cleaner To Clear Soot Blockages Quickly & Avoid Costly Repairs, Hassle-Free DPF Cleaner To Prevent Clogging & Reduce Emissions, 250ml
Redex
10.0
47% off
2
STP Ultra 5 in 1 Diesel Fuel System Cleaner 400ml , Restores Power and Protects your Engine, Enhances Fuel Economy, Mechanical Car Cleaning Products, Concentrated Cleaning Formula, Made in the UK
STP
10.0
7% off
3
Redex Diesel Fuel System Cleaner 500ml, Diesel Additives To Remove Harmful Emissions, Maximise Performance & Increase Fuel Economy With Redex Fuel Additives For Diesel Engines, Suitable For Hybrids
Redex
9.9
26% off
4
Redex Diesel Booster, Diesel Additives To Boost Cetane Number, Maximise Performance & Increase Fuel Economy With Redex Diesel Fuel Additive, Boost Diesel Engine Performance & Improve Power, 250ml
Redex
9.7
5
Wynn's Extreme Diesel System Fuel Injector Cleaner Engine Additive Treatment 325ml
Wynn's
9.6
OtherUp to 26% off
STP Diesel Particulate Filter Cleaner 200 ml, Cleans and Protects Your Filter by Removing Soot in One Treatment, Restores Power and Acceleration, Mechanical Car Cleaning Products, Made in the UK
STP Diesel Fuel Additive Twin Pack
Wynn's Professional Formula Extreme Diesel Injector Cleaner Fuel System Additive 500ml
Wynn's Formula Gold High Performance Diesel System Treatment 500ml
6
Archoil AR6900-D Max Advanced Diesel Additive Concentrate, 1L Treats 1,000L of Fuel, Diesel Fuel Injector Cleaner, DPF Filter EGR Valve Turbo Cleaner, Super Diesel Converter. (1Litre)
Archoil
9.4
10% off
7
Redex Diesel Fuel System Cleaner 250ml, Diesel Additives To Remove Harmful Emissions, Maximise Performance & Increase Fuel Economy With Redex Fuel Additives For Diesel Engines, Suitable For Hybrids
Redex
9.2
15% off
8
Wynn's Diesel Particulate Filter Cleaner Fuel Additive DPF Regenerator Treatment
Wynn's
8.9
9
Archoil AR6400-D MAX Pro DPF Cleaner Diesel Fuel System, Diesel Injector Cleaner, Turbo, CAT Cleaner Concentrate - High Strength Carbon Removal & Exhaust Emissions Reduction for MOT Pass (400ml)
Archoil
8.7
14% off
10
Wynn's Diesel Power 7 Complete Action Fuel Additive Optimises Engine Performance 1L
Wynn's
8.4
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A Guide to Selecting the Best Diesel Fuel Additives
Choosing the right diesel fuel additive can significantly improve the performance and longevity of your diesel engine. Diesel fuel additives are chemical compounds formulated to enhance the quality and efficiency of diesel fuel. They can help in cleaning the fuel system, improving fuel economy, reducing emissions, and preventing fuel gelling in cold weather. To select the best diesel fuel additive for your needs, it's important to understand the key specifications and how they align with your vehicle's requirements and your driving conditions.
Cetane Number Improver
The cetane number is a measure of the combustion quality of diesel fuel during compression ignition. A higher cetane number indicates that the fuel ignites more easily and burns more completely, leading to smoother engine operation and reduced emissions. Cetane number improvers can be particularly beneficial for older engines or those that experience rough idling. If you frequently drive in cold weather or have a high-performance diesel engine, look for additives that boost the cetane number.
Lubricity Enhancer
Lubricity enhancers are additives that reduce friction and wear in the fuel system, particularly in the fuel pump and injectors. This is crucial because modern ultra-low sulfur diesel (ULSD) fuels have lower natural lubricity, which can lead to increased wear and tear on engine components. If you want to extend the life of your engine and maintain optimal performance, choose an additive that includes lubricity enhancers.
Fuel Stabilizer
Fuel stabilizers prevent the degradation of diesel fuel over time, which can lead to the formation of gums, varnishes, and other deposits that clog the fuel system. This is especially important if your vehicle sits unused for extended periods. If you store diesel fuel for long durations or have a backup generator, a fuel stabilizer can help maintain fuel quality and ensure reliable engine starts.
Anti-Gel Additive
Anti-gel additives prevent diesel fuel from gelling or thickening in cold temperatures, which can clog fuel lines and filters, making it difficult to start the engine. These additives are essential for those who operate diesel vehicles in cold climates. If you live in or travel to areas with freezing temperatures, an anti-gel additive will help keep your fuel flowing smoothly.
Detergents
Detergents in diesel fuel additives help clean the fuel system by removing deposits from injectors, valves, and combustion chambers. This can improve fuel efficiency, reduce emissions, and restore lost power. If you notice a decrease in engine performance or fuel economy, or if you drive a high-mileage vehicle, look for additives with strong detergent properties.
Corrosion Inhibitors
Corrosion inhibitors protect the metal components of the fuel system from rust and corrosion, which can be caused by water contamination in the fuel. This is important for maintaining the integrity and longevity of the fuel system. If you operate in humid environments or use biodiesel blends, which can attract more water, a corrosion inhibitor is a wise choice.
Emissions Reducers
Emissions reducers are additives designed to lower the levels of harmful exhaust emissions, such as particulate matter and nitrogen oxides. These can help your vehicle meet environmental regulations and reduce its environmental impact. If you are concerned about air quality or need to comply with stringent emissions standards, consider an additive that focuses on reducing emissions.
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