Ash-free additive combination to prevent malfunctions in the SCR system of diesel engines. Reduces the formation of deposits in the AdBlue tank and AdBlue injection system. Ensures the finest atomisation of the urea solution by reducing the surface tension. Optimises the return flow of AdBlue into the system and thus minimises the risk of AdBlue crystallisation. For all SCR systems that are operated with 32.5 % urea solution (AdBlue, DEF). When adding to the AdBlue tank, ideally add after the filling process. Application Add 0.25 % to the AdBlue solution (1:400). 250 ml is sufficient for 100 litres of AdBlue. For permanent use. Do not add to the fuel. When adding to the AdBlue tank, ideally add after the filling process. Other information Sensitive to frost. Shake up sediment at room temperature.