Hi, I have a problem with my A7 2013 3.0 diesel, the car has recently started to use water, roughly 2 litres every 1500 miles or so. there are no visible leaks, and the water level often remains static for quite a while before suddenly dropping. my mechanic cannot find any visible leaks, and is saying that he may need to start stripping down between the Vee of the engine to find the source, which will be time consuming and expensive. obviously if this is the only action then so be it, but just wondered if any other owners of the 3.0 had experienced this before, and what the problem was? thanks.
