10 bestDiesel Additivesof May 2025
112M consumers helped this year.
1
Cataclean Diesel | Complete Fuel & Exhaust Cleaner | Catalytic Converter, Valve & Injector Cleaner | Fuel Additive Formulated for Performance & Fuel Efficiency | Pre MOT Emissions Reducer | 6 x 500ml
Cataclean
9.9
2
Archoil AR6900-D Max Advanced Diesel Additive Concentrate, 5L Treats 5,000L of Fuel, Diesel Fuel Injector Cleaner, DPF Filter EGR Valve Turbo Cleaner, Super Diesel Converter. (5Litre)
Archoil
9.8
5% off
3
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
9.6
4
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 (5Litre)
Archoil
9.4
5
Cataclean Diesel | Complete Fuel & Exhaust Cleaner | Catalytic Converter, Valve & Injector Cleaner | Fuel Additive Formulated for Performance & Fuel Efficiency | Pre MOT Emissions Reducer | 4 x 500ml
Cataclean
9.2
OtherUp to 9% off
Wynn's Professional Formula Extreme Diesel Injector Cleaner Fuel System Additive 500ml
Wynn's Formula Gold High Performance Diesel System Treatment 500ml
SYPRIN Diesel Additive and Cleaner Bundle - maintaining and cleaning for diesel fuel motors engines systems injectors I engine injector - 250ml + 500ml
HYDRA DPB-100 Diesel Power Blast - Diesel Fuel System Cleaner | Diesel Injector Cleaner with Diesel Fuel Additive | 1 litre treats 1,000L
6
Cataclean Diesel | Complete Fuel & Exhaust Cleaner | Catalytic Converter, Valve & Injector Cleaner | Fuel Additive Formulated for Performance & Fuel Efficiency | Pre MOT Emissions Reducer | 2 x 500ml
Cataclean
9.0
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
8.8
8
Wynn's Extreme Diesel System Fuel Injector Cleaner Engine Additive Treatment 325ml
Wynn's
8.5
9
SYPRIN Diesel Cleaner 3x 500ml - cleaning and maintenance of diesel fuel systems and motors I diesel cleaner additives for injector dpf particulate filter motor…
SYPRIN
8.2
25% off
10
STP Diesel Fuel Additive Twin Pack
STP
7.9
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A Guide to Selecting the Best Diesel Additives
When choosing diesel additives, it's important to understand that these products are designed to enhance the performance and longevity of your diesel engine. Diesel additives can help improve fuel efficiency, reduce emissions, and prevent engine wear. The right additive for you will depend on your specific needs, such as improving fuel economy, cleaning the fuel system, or protecting against cold weather. Understanding the key specifications of diesel additives will help you make an informed decision that aligns with your vehicle's requirements and your driving conditions.
Purpose
The purpose of a diesel additive is crucial because it determines what the additive is designed to do for your engine. Additives can serve various functions such as cleaning the fuel system, improving fuel economy, enhancing lubrication, or preventing gelling in cold weather. To choose the right one, consider what specific issue or improvement you are targeting. For instance, if you are experiencing poor fuel economy, look for additives that focus on fuel efficiency. If you live in a cold climate, an anti-gel additive might be necessary.
Compatibility
Compatibility refers to whether the diesel additive is suitable for your specific type of diesel engine. This is important because using an incompatible additive can lead to engine damage or reduced performance. Diesel engines can vary significantly, so it's essential to check the product label or manufacturer's guidelines to ensure the additive is compatible with your engine type. If you are unsure, consult your vehicle's manual or a professional mechanic to determine the best option for your engine.
Concentration
Concentration indicates the amount of additive needed per gallon of diesel fuel. This is important because using the correct concentration ensures the additive works effectively without causing harm to the engine. Additives come in different concentrations, and it's crucial to follow the manufacturer's instructions for the correct dosage. If you are looking for a more potent effect, you might choose a higher concentration, but always ensure it aligns with your engine's requirements.
Seasonal Use
Seasonal use refers to whether the diesel additive is designed for specific weather conditions, such as winter or summer. This is important because certain additives are formulated to address issues that arise in specific climates, like preventing fuel gelling in cold temperatures or reducing evaporation in hot weather. If you live in an area with extreme temperatures, consider choosing an additive that is tailored for those conditions to ensure optimal engine performance year-round.
Additive Type
Additive type refers to the specific formulation and function of the diesel additive, such as cetane boosters, anti-gel, or detergents. This is important because different types of additives address different engine needs. For example, cetane boosters improve combustion efficiency, while detergents clean the fuel system. To select the right type, identify the specific issue you want to address in your engine, such as improving start-up performance or cleaning injectors, and choose an additive that targets that need.
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