Hello dear forum the other day it probably did PENG in the workshop and the screw on the drain tap of the cooler said goodbye. Strange was only that the temperature was probably not too high. (according to the description of the workshop) Well, the cooler was patched and I could drive again. However, only about 2 days. Then the coolant came out again. Although not abrupt, but probably steady up to the MIN display of the coolant tank. The patch is absolutely tight. I have in the anh In addition, one hears a kind of knocking noise, which always (threatfully) becomes louder when one starts the good. My guess is that a line is clogged and that the overpressure has arisen. Because one has only patched the hole at first, the actual damage has not been fixed of course. Do you have ideas or experiences with such peculiarities? For all the ideas already in advance a big thank you! All of them…