Hi, unfortunately I found coolant loss on my omega today. Vehicle was on stage and you could see the cooling water at the transmission bell, everything dripped. So rather everything so driver side, everything is dry. At first glance you could not see where it could run out. CO-test has already been done, so I hope I can exclude the ZDK. Now I have heard something about the shut-off valve, especially that this often gets broken, Can you check this somehow? And how can you get the best answer? Suction bridge out? Is there also the “backdoor” here so often called “backdoors”? I have heard a lot about the oil cooler, hope it isn’t. Greeting Michael