I have a 2006 Jetta sedan TDI (low VIN #) When I was replacing the DMF, I noticed that the turbo has been leaking oil onto the heater hoses. It looks like it comes out of the shaft. Also, there is a lot of play in the waste gate from wear. This rattles a bit at low rpm. The car is running really good right now--new camshaft, new flywheel, new timing belt, custom Kerma tune--but now that the engine is a lot smoother and quieter, I am hearing a solid whoosh before the turbo kicks in, and after I feather off, in a high-vacuum stage. Turbo boost is good, and the engine is powerful. The whoosh is exactly what my Chevy pickup engine sounds like when the air cleaner is off and the carb gets to the high-vacuum stage. I know the whoosh could be coming from many different sources, or it could be entirely normal for this car. Performance is not an issue at the moment. The rattle that comes from the play in the waste gate is annoying but goes away mostly when the engine is warm. I am hearing for the first time the turbo winding down after I turn off the engine. My question is whether the oil leak, the whoosh, the rattle, the whirring wind-down indicate that I need a new turbo. This is what happens when you fix the engine so you can start to hear the little stuff!