what is adblue fuel

AdBlue is a fluid used in the catalytic converter fitted to the exhaust systems of some diesel cars. It is a mixture of urea and deionized water. AdBlue is not mixed with diesel fuel, but instead, it works with the exhaust gases after they come out of the engine. It is stored in a separate storage tank with its own inlet and is sprayed into the exhaust stream in measured doses. It then reacts with the nitrogen oxide in the exhaust gases and, via the catalytic converter, is transformed into nitrogen and water. AdBlue is used to reduce harmful emissions of nitrogen oxide (NOx) which are harmful to the environment and thus meet the stringent emission limits set by European standards (Euro 6) . AdBlue is not a fuel additive, but a trademarked name for a brand of diesel exhaust fluid. If AdBlue is accidentally poured into the fuel tank, the fuel tank will need to be drained, as it could damage the engine and corrode fuel lines.