What Is AdBlue?
AdBlue is a trademarked brand name for Diesel Exhaust Fluid; a solution used in Selective Catalytic Reduction systems of modern diesel engines. A colourless liquid mixture of urea and water, it’s an exhaust fluid stored completely separate to your vehicle’s fuel. When diesel fuel is burned by the engine, AdBlue is injected into the SCR to convert nitrogen oxide into harmless nitrogen, water vapour and carbon dioxide.