what is adblue made of
AdBlue is an aqueous urea solution made from 32.5% high purity urea and 67.5% deionised water. It is also known as diesel exhaust fluid or AUS32. The German Association of the Automobile Industry (VDA) own the trademark for AdBlue.arge vehicles have a designated AdBlue tank in which the solution is stored. This is then injected into the exhaust (at a rate of 2% of the diesel consumption volume) as it moves through the engine. It then vaporises and decomposes to form ammonia and carbon dioxide.