OEM AdBlue diesel exhaust fluid and NOx-reducing agent for diesel engines with SCR-exhaust gas after treatment. This fluid is used in the 2012-2016 NMS Passat TDI, all V6 Touareg TDI, all Q7 TDI, and all Cayenne Diesel models. It is also used in all Mercedes BlueTEC vehicles as well as the BMW 3 series and X5 diesels. 2.5 gallon jug (9.46 liters). Includes a spout.