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How AdBlue® works

  • What is AdBlue® made of?

    AdBlue® is a liquid containing 32.5% of urea and 67.5% of demineralised water.

  • Does my vehicle need AdBlue®?

    You can enter the name of the make and model of your vehicle, and the year when it was made, in our simulator to find out whether it is equipped with the SCR technology that requires the use of AdBlue®. You can also estimate your AdBlue® consumption.

  • How does SCR  technology work?

    The AdBlue® is injected into the exhaust pipe between the engine and the SCR catalyst. When it heats up in the exhaust pipe, the AdBlue® decomposes into ammonia. The nitrogen dioxides (NOx) in the exhaust fumes react with the ammonia in the catalyst to form nitrogen, the main component of the air we breathe, and steam.

  • Are there different qualities of AdBlue®?

    The formulation of all the products with the AdBlue® brand label is of the same quality and meets the ISO 22241 standard. The AdBlue® brand mark is a guarantee of the product quality and shows that it meets this standard.

  • Did TOTAL develop AdBlue®?

    No. AdBlue® is an aqueous urea solution that meets the ISO 22241 standard. It was developed as a consequence of carmakers’ decision to adopt SCR technology in order to meet the European regulations on polluting emissions.
    AdBlue® is a registered trademark of the German automotive industry association (VDA).

  • What is AdBlue®?

    AdBlue® is an aqueous solution containing 32.5 % of extra-pure urea* and 67.5 % of demineralised water. The formulation of AdBlue® meets the ISO 22241 standard.
    AdBlue® is used in diesel vehicles equipped with SCR (Selective Catalytic Reduction) technology.
    Caution: AdBlue® is not an additive to be poured into the fuel tank. It must be poured into the special tank, whose position varies between vehicles.
    AdBlue® is biodegradable, soluble in water and colourless.
    AdBlue® crystallises at -11°C.
    AdBlue® is a registered trademark of the German automotive industry association (VDA).

  • The Euro 5 and Euro 6 standards: why do I need AdBlue®?

    The European Union regulates polluting emissions of vehicle exhaust fumes in an effort to improve air quality. A series of successive European standards (Euro 1 to Euro 6) has been issued to set increasingly low emission limits. These standards aim to reduce exhaust fumes emissions, including nitrogen oxide (NOx) emissions.
    Since the introduction of the Euro 6 standard in September 2014, all new diesel light vehicles have been equipped with a NOx treatment system. SCR (Selective Catalytic Reduction) technology, which works with AdBlue®®, is the most widely used system amongst carmakers. When used in combination with SCR technology, AdBlue®® transforms almost all the nitrogen oxides (NOx) in the exhaust fumes from diesel vehicles into harmless nitrogen and steam.