AdBlue Carlube is a light colourless 32.5% Aqueous Urea Solution used as a fluid in the latest generation of diesel-powered Euro IV Euro V & Euro VI trucks. Reduces environmental impact through reduced emissions. Benefits include 5% reduction in fuel, lowers servicing costs. Complies with DIN700070 and ISO 22241 specifications. All trucks and buses registered after October 2006 must be Euro IV, Euro V or Euro VI compliant and most will require AdBlue.