Adblue Def Fluid 5l

AdBlue (also known as Diesel Exhaust Fluid or DEF) is a non-toxic, high-purity urea-based fluid used in modern diesel vehicles. It is injected into the exhaust stream to break down harmful nitrogen oxides (NOx) into harmless nitrogen and water vapor. It does not go into the fuel tank and has its own dedicated, usually blue-capped, filler