Hello together. I have a v60 d3/d4 2.0 163 for a short time. Shortly after the purchase (from private) about 1000km I had to refill cool water. After I did not find any recognisable leak, I filled UV additive into the circulation. Without results. So I assume that it goes through the exhaust. A pressure pruning (warm driven) overnight was also fine. (according to the workshop) It must also have been properly at temperature, as the average consumption when picking up a co2 test I couldn’t do, because there was too much foam coming from the tank. clear, not normal, but where does it come from? gas / overpressure from the engine would indicate leakyness, but should be noticed in the amount when pressing. I had suspected before pressing that the engine was pushing what into the cool water circulation. Possibly the pressure is not sufficient at the pressure pruning and it is the nasty hair crack. then the water would not be verb I read all the articles about it, but I didn’t find anything suitable. Does anyone have an idea? I’m grateful for everything.