Moin, I drive an Omega B bj 98 2.0liter 100kw which now has 275000 km runer. 35,000km ago, the ZKD was renewed for 600€ in a free workshop. This is now 2 years ago and I had no problems a year, after a year I had severe water loss, due to overpressure on the balancing tank (cooling water) Then I had first changed the lid and when that did not help, the container itself. Then was a time of rest (about a month ago) until it started again on lä I tried it again with a new lid, nothing changed. Now after a longer A-Bahn journey of 700Km I certainly had to tilt 2 liters of water. Oil time the thing as good as nix, fills 250ml to 1500km, everything in the frame. Before 2 years ago the ZKD were made, the engine became extremely warm and drank cooling water, I did not have that now as I said. The engine always stays at 82°, only on long motorway rides under load it gets warm, or in the city traffic, then the fan starts. Yesterday I was finally in the workshop (not the same that changed 2years ago ZKD) And I told him the problem, he smelled briefly at the cooling water and said ZKD 500€ without KR change. The workshop is somehow specialized in Opel, is a free and makes bar prices vllt after all someone has an idea, if this now all Immmmt and the ZKD have to be made. In my opinion 35000 km are quite little, is the “normal” that the change is about to take place again? ICh is of the opinion that the heads have also been sanded plan, so it has not been felt. Greetings from the beautiful Lübeck mr pink