Moin, picked up my thickness from Dinslaken on the weekend – home journey approx. 600km. In between the Vmax tested – at 140 the speedo needle ran into nowhere and simply stopped there. Think that there are 180-190 in it. It lurks something, but pulls always further… Anyway, then about 50km before home the upper cooler hose, which leads to the thermostat, burst up with a loud bang of the length. Motor immediately shut down and let roll out. One – the box rolls but also el The joy did not last long: despite filling up new cooling water in balance tanks AND coolers, the engine boiled up within a few kilometers. When the storage trays came out clacking, I immediately switched off. Hood on – it hissed and boiled a little in the area of the heads. Looked into the cooler – faded empty. Suddenly, the water from the supply container glaciated. My guess: Thermostat defective – but that during the ride? On the weekend I take it out and put it in boiling water. Maybe the WaPu is also over – but first after the thermostat. Oil was not in the water and vice versa nothing to see. Your thoughts about it? LG – MT