Good day, I bought a caravan and now have noticed with some problems. The caravan As the previous owner says a new cylinder head seal and a new tooth belt. However, the oil has not been grown since 2011 which I have also seen the oil was completely black and thin like water, gistern I had oil changed (it was no mayonnaise under the lid or anywhere else). Now we come to the problem ourselves. Every time I use the n home starte comes there only briefly a black cloud out afterwards the smoke white/blue from the exhaust, the smoke comes dan about 30-60sec from the exhaust until the engine is a little warmer afterwards the blue smoke disappeared. Dan only comes against smoke when you drive or when you put on the home mobile so give a little more gas, This smoke is but dan black and this smoke disappears not only when you give less gas he is away. What could be that I urgently need help. D aten zum auto/wohnmobil Fiat Ducato 2.5 TDI Year of construction. 1990 Km stood: approx. 160.000KM (I could possibly upload a short video here so you can see what it looks like.) With kind regards.