Last summer, just before the Urlaiub, I bought a 2.5DTI with automatic as a train car for the caravan. My workshop had checked it out and then I went on holiday with a good conscience. I noticed already at the first meters that the turbocharger under load (with caravan darn) whistles between 2 and 3000 revolutions. it is gone again. A short call at my workshop. They meant that this is normal. Just before the Spanish border i If you know the route, that was on the bridge, the last mountain lift in front of the Spanish border. The French workshop did not even have prices after a week. My workshop then when I drive without a trailer I also said back. I did that too. I had to pray on the slopes and at the rest places always wipe the oil off the fender but I came home. The workshop has the pressure regulator But now I have already had 4-5 times the phenomen, which flies the charging air pipe at the top of the engine. In addition, the turbo outside is also more oiled (from my point of view). After I read here in the forum intensive, I had the crankcase ventilation (filter) cleaned in the workshop. But now the problem has occurred again. I also have the whistling noise of the turbo. My workshop thinks that is too much pressure in the whole turbo range. Is one of you already had the same phenomen that the hose runs off and which pressure the turbo builds up with maximum load. Maybe you also have an idea what the whole can be Thank you.