Remove the oil feed line for the exhaust turbocharger (engine encapsulation removed)

Have a rag ready and catch any motor oil that may emerge.
Make sure no motor oil runs on the exhaust system.
Slacken the bolt (1) and pull the oil feed line (2) off the exhaust turbocharger.

Courtesy of BMW OF NORTH AMERICA, INC.
Feed the oil feed line (1) out towards the front top.

Courtesy of BMW OF NORTH AMERICA, INC.