What is AdBlue?

AdBlue is an additive developed for the motoring industry. It is used alongside diesel to reduce mono-nitrogen oxide emissions from exhausts. The vehicle requires a special tank to carry the fluid which is transferred using specialised AdBlue dispensing equipment. It transforms the harmful mono-nitrogen oxide toxins in diesel vehicles into nitrogen and water vapour. Using AdBlue has no effect on the power or torque output of the vehicle.

It is vital that AdBlue is kept pure, so the way that it is stored is important in order to avoid contamination. This means keeping the container sealed and storing it at temperatures above -11°C. It is also critical to use the correct amount. This will depend on the type of vehicle and the tank size.


What are the uses of AdBlue?

AdBlue is used in many diesel vehicles and is a legal requirement in trucks and modes of public transport that were manufactured after 2005. Those manufactured before this period are not required to use AdBlue due to the difficulty in adapting older models of vehicles. Newer vehicles, such as buses and trucks manufactured after 2005, will need regular top ups of AdBlue, though the frequency of this will depend on the model, the amount of use and the mileage of a vehicle.


  • AdBlue® is not a fuel additive. This is why there is a separate AdBlue® tank
  • If you put AdBlue® in your fuel tank by mistake, please do not start the engine, but contact a retailer for help
  • Put only AdBlue® in the AdBlue® tank; do not fill the AdBlue® tank with any other liquids
  • Prevent anything from contaminating AdBlue®
  • If small quantities of AdBlue® come into contact with the vehicle’s paintwork, for example, wipe them off and if necessary rinse the area with water

The quality of AdBlue is very important. To make sure the quality stays high, JAM produces AdBlue strictly according to ISO and DIN standards. These standards specify the exact composition of AdBlue and urea and instructions on storage and test methods. Following these standards ensures a high quality product that is safe for consumers and vehicles. To guarantee the quality of the produced AdBlue every batch is analyzed according to the ISO 22241 standards and can be traced back to its origin. To make sure you buy AdBlue from a VDA licensed partner look for the text ‘AdBlue according ISO 22241’on the container or dispensing system. ISO is an international organization that creates standards to ensure consumer safety and guarantee interchangeability, quality and reliability.

AdBlue should be stored out of direct sunlight between -6°C and 25°C in a clean and sealed container or dispensing unit. Storing it in the wrong equipment may result in costly damage to your vehicle due to contamination, which can result in SCR-catalyst replacement and downtime.

There are many so called “experts” which think of AdBlue as if it were a simple watery solution. AdBlue looks like water but it definitely is not water; it has very specific characteristics which need to be respected.  These basis characteristics are:

  • AdBlue is corrosive - Many materials cannot withstand AdBlue and start rusting or dissolving
  • AdBlue crawls - This makes sealing a product correctly very important, otherwise the product will leak through.
  • AdBlue forms rock-hard crystals when dried - This in combination with the crawling makes incorrect designed products vulnerable for defects. When crystallization starts in small cracks a defect is waiting to happen.
  • AdBlue is heavier than water - Take this into account whenever AdBlue is stored or moved, it weighs 1,09 kg per litre
  • AdBlue freezes at -11° C - For some countries or applications heating will be needed.
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The quality of AdBlue is very important as contamination can result in damage to your SCR catalyst after treatment system. This damage can result in costly replacement and downtime costs. To keep the highest quality of AdBlue it is important to store AdBlue the right way and keep it clean!