Telp Snowbeard 
2011 BMW 5 Series Sedan 550i 4dr Sedan (4.4L 8cyl Turbo 6M)
n63 Engine is nothing but trouble.
 This is a bad engine. Google it. Constant engine light issues of "Crankcase Failure". These messages are related to bad engine parts like fuel injectors and sensors. I had to replace head cover gaskets, turbo pan gaskets and other gaskets. Car is a repair nightmare.  Only 41K miles and way too many problems. Unreliable.