We have a range of pack, IBC, and bulk-supply AdBlue® solutions to suit you.

What is AdBlue®?

AdBlue® is a trademarked brand name for DEF (Diesel Exhaust Fluid) – a solution used within the Selective Catalytic Reduction (SCR) system in modern diesel engines. A highly-purified mixture of water and urea, AdBlue® passes through the SCR system during operation, and converts potentially harmful NOx emissions in exhaust gasses into a mixture of water vapour and nitrogen. This system was developed to help reduce air pollution created by modern vehicles and to meet Euro VI emissions legislation.

Why do I need AdBlue®?

Over the past 20 years, European legislation has transformed our vehicles and the impact they have on the environment.

By defining a series of emissions targets for all new vehicles sold in the EU, the legislation has compelled Original Equipment Manufacturers (OEMs) to seek new ways to filter and reduce harmful emissions. Exhaust after-treatment systems have been one of the most prominent types of solutions adopted.

Three main after-treatment systems have been developed. All three systems work in different ways to reduce emissions, and each has a different impact on your fleet’s performance and maintenance requirements.

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EGR – Exhaust Gas Recirculation System

NOx is created when nitrogen and oxygen combine at high temperatures. The EGR system recirculates old exhaust gas to reduce the temperature in the engine cylinders, resulting in a reduction in the level of NOx produced.

DPF – Diesel Particulate Filter

As the name suggests, a DPF works like a sieve to filter out the particulate matter (soot) from the exhaust. This soot builds up on the filter, and therefore needs to be periodically ‘burned off’ to maintain the efficiency of the system.

SCR – Selective Catalytic Reduction System

In an SCR system, Diesel Engine Fluid (aka DEF or AdBlue® - a mixture of purified water and urea) is injected into the SCR catalyst. The fluid reacts with the harmful NOx emissions to create nitrogen, water, and carbon dioxide – reducing emissions by up to 95%. Vehicles with SCR systems need to replenish AdBlue® to continue to function. Often, sensors can prevent the vehicle from starting or running if an insufficient level of AdBlue® is detected.

What does that mean for my vehicles?

As SCR systems are usually closed units, any deposits or contamination can result in a complete system failure and require a full replacement. It is therefore crucial that AdBlue® is kept free from possible contaminates.

At Watson Fuels, we supply fully-licensed AdBlue®. This ensures that the product we supply has gone through tightly controlled manufacturing, handling and storage processes to meet the high specification set by the VDA (Verband der Automobilindustrie – the German Automotive Industry Organisation, and owners of the AdBlue® trademark). These high standards are vital to protect your vehicles against contamination and potential damage to your vehicles’ SCR systems.

It is also important to continue these controlled processes after delivery, to help maintain the quality of your AdBlue®. Here are some simple steps that can help:

  • Always fill your AdBlue® tanks straight from the container in which your AdBlue® was supplied.
  • Never put any other fluid into an AdBlue® tank.
  • Only use an AdBlue®-specific dispenser or pump to dispense AdBlue®.
  • Do not dilute the product.
  • Only buy authorised AdBlue® solution.

Supplying the solution

If your vehicles are fitted with an SCR system then the reliable supply of AdBlue® will be key to keeping your fleet on the road and reducing your emissions. At Watson Fuels, we work in partnership with Brenntag the largest worldwide distributor of AdBlue®, to deliver high-quality AdBlue® that meets DIN 70070 and ISO 22241 standards. 

Our experienced team is dedicated to providing a reliable, efficient service and delivery. Our team will work with you to find the right supply solution for your business to help keep your emissions in control and your fleet on the road. 

Looking to place an order?

We have a range of pack, IBC, and bulk-supply AdBlue® solutions to suit you.

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Frequently Asked Questions

  • Each vehicle has a slightly different procedure when AdBlue® is running out so check with the manufacturer for full details.

    As a guide, if AdBlue® is low the vehicle will first notify the driver. If AdBlue® is then left to run out, most vehicles will limit performance and will not restart when the engine has turned off.

AdBlue® is the registered trademark of Verband der Automobilindustrie (VDA)