Moin Moin to all drive a V70 I 2,4T Bj.98 Mj. 98 and have had a little problem with the cooling water temperature for a few days. When I came from AB two days ago after 40 km drive at 120-130 km/h, I noticed that my cooling water indicator rose (not yet in the red area). I then put the moose off and saw how the cooling water from the balancing tank peppered…short waded and ripped up the thing. I then filled up about 2l new water and went on with connected I let my father-in-law look for clueless things. He couldn’t detect a leak or something like that… we could already find out the following: spark plugs look top, termostat, sensor and lid from the balancing tank (green) came back last year, water pump runs and coolers get hot and drained, no white slime on the lid from the oil as well as no one on the measuring rod, fan runs, No smell of exhaust gas in the balance tank and under the car everything was dry. Yesterday evening I went back to the track and allowed Elchi a bit of passage… Conclusion; 15 min at 160-180 all Tuti ( great passage, no power loss )… then again the same problem… so the 2 km to the exit on the stand with warning blink at moderate speed…Water is overcooked again and I had to fill up well 1l then…then at 90km without further problems the 30 km back again. now the question is…where is the problem…fans, coolers, or plunging the ZKD, someone here has had the same problem or something like that that can help me.