When I got it, there was already oil sludge in the water tank. We flushed properly because only last year an ATM was put in. Now almost 3,000 km later the oil which belongs in the oil tank in the water tank and nobody knows how it gets there. If the engine was broken that water was in the oil and not the other way around. Besides, the engine still runs clean has no dropouts and doesn’t rust either. before I was on the highway and he pulled as always, which is rather atypical for engine damage. Does anyone have an idea if a mistake was made with the ATM that caused the problem? Maybe someone of you had the same problem and already knows the solution. Omega Caravan 2,0l 16V Greeting Sandra