There are a lot of significant problems associated with the so called ADBlue liquid for emission control in diesel cars. Keep in mind that you only require 5ml of diesel in a 20l ADBlue tank to contaminate it. The result? It depends on you only. An ADBlue contamination requires immediate help, but the breakdown service must take your car to the garage. Attempting to drive the car yourself will most likely ruin the entire engine since the diesel and ADBlue mixture turns into a thick paste. You clearly do not want these things into your engine, so react as soon as possible..