It is important to refer to the high quality of AdBlue®. The use of an additive that does not meet the requirements of DIN 70070 / ISO 22241-1 causes various problems, starting from high exhaust emissions to wholesale destruction of the catalyst. At the same time, since the exhaust fumes cannot be removed from the catalyst in a timely manner, it can cause various engine problems due to the pressure of these fumes. This is due to poor quality AdBlue®, which reduces the size of the catalyst pores inside and renders its catalytic elements inoperable.