Took the car to the garage for a service. E70 3.0D with 50,000km.
It came back with oil dripping from under the engine, drivers side.
Took the car back and was told the seal has gone between the charge air line and the radiator. It was nothing they touched.

It is part number 8 on the diagram in the link below.

Intake manifold-supercharg.air duct/agr BMW X5 E70, X5 3.0d (M57N2)

Can there be oil in this part of the engine?
Can the seal go after just 50km?