Ölverlust am Turbolader | Posts 16+

8, 9, and 10 are hoses, while 11 is a pipe.
They are all potential causes, along with the LLK (likely referring to a coolant heat exchanger) or the gasket between the intake manifold and the engine block.

But without knowing the cause, I wouldn't just replace the number 8.

'I noticed the exact same thing on my B4 TDI today, except that the entire left side of my expansion tank was covered in oil. After cleaning it, it looks like the photo you posted. I removed the hose, cleaned it, and reattached it. If it still doesn't fit properly, I'll replace the hose.'
Perhaps it's also coming from the connection of the boost pressure control valve, as it's located in that area. Or would that be more unusual?

'Does anyone happen to know how much hose number 8 costs at the dealership? Maybe it's worth replacing it preemptively before I keep messing around with the car.'

'I went to the mechanic yesterday because I absolutely need the car to be working properly on Monday. He tightened all the clamps and said that oil leakage is quite normal for a turbo with 192,000 kilometers (approximately 119,000 miles) of mileage. And to get to the other hoses and the intercooler, you would have to remove the entire front bumper.'

Okay, I'll drive the car again on Monday, and then I'll check the engine under the car again this weekend.

Regarding the condition of the car, I can only say that my engine and transmission are completely dry on all sides.
"And the turbo only leaks oil at the shaft seals, which then enters the hoses. Oil only escapes externally if a hose is leaking."
But I don't want to repeat everything 100 times.

"That reminds me: Is the seal between the intake manifold and the T-piece for the EGR system tight on your car? I know some B4s that have leaks there. You can get a metal gasket for it cheaply from the dealership, and installation isn't difficult."