Automotive fluids

AdBlue (DEF)

VOLTREK AdBlue is a high-purity urea solution for SCR systems on diesel engines, converting NOx into nitrogen and water vapour.

VOLTREK AdBlue packaging for diesel engines

AdBlue is a high-purity aqueous urea solution (AUS 32) used in SCR exhaust after-treatment systems. It is injected into the exhaust gas ahead of the SCR catalyst and converts nitrogen oxides (NOx) into nitrogen and water vapour so the diesel engine meets emission standards.

VOLTREK AdBlue is produced to a controlled purity, because even small amounts of contamination crystallise and damage the injector, the NOx sensors and the catalyst. The packaging is designed for clean, spill-free filling.

AdBlue is not a fuel additive: it goes only into the dedicated tank with the blue cap. For availability, OE cross-references and trade enquiries, contact us by email.

Frequently asked questions

What is AdBlue?
AdBlue is the trade name of the aqueous urea solution (AUS 32) injected into the exhaust of diesel engines with an SCR system to convert nitrogen oxides into nitrogen and water.
Can I dilute AdBlue with water?
No. The urea concentration must stay within specification; water or contaminants damage the injector, the sensors and the SCR catalyst.

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