I have discovered some leaks (dont know how for long are there) on the air connection hose from the air filter, immediatly before the connection with the turbocharger. Is this normal? Which sould be the cause? The hose connection with the turbine?

Is the oil comming trough the crankcase ventilation hose in to the air hose and leaking at the turbine join?

Or is possible that the oil circulate from the oil block of the turbine (were the shaft is) to the propeller room ? Is this normal?

 

The car have 63 000 km. It s a BLS 1.9 TDI 77 kw

 

Thanks

Nobody has any clues?