Rubber hose for sharan tdi tear. could it be the cause of oil leakeage on the bonnet. apporox 3" hose

Hi
it sounds like an oil cooler pipe or an oil breather most likely the oil breather for the turbo, this is quite common that oil will build up in here and does leak due to the pressure from the turbo, remove the pipe as it should not have loads of oil in it basically just oil vapour that builds up over time then leaks out. cklean it all out everywhere you can see that has oil and see if the problem persits, also the car has a plastic pan / cover under the engine to stop any damage to the bottom of the engine when you go over things, however this is also like a pan to collect oil so it tends to gather in there in small amounts then drips out when the car is moved. the best advice I could give is have the engine professionally steam cleaned with engine degreaser and hot steam.

Once clean any leaks would be more apparent and this ofetn helps diagnose the fault quicker.

Regards

Dan