OIL LEAKS on 2006 BMW M5

WHAT ABOUT OIL LEAKING FROM CRANKCASE AND THE ONLY FIX IS
TO REPLACE CRANKCASE. on 2006 bmw m5

Asked by for the 2006 BMW M5
1 answer
This sounds silly.
"WHAT ABOUT OIL LEAKING FROM CRANKCASE" is this a question?
Answer?: The engine contains oil and when seals and gaskets get old/hard the oil leaks past them.
The crankcase is seals with gaskets and seal. The source of the leak is to be found and the gasket/seal is to be replaced.
If unusual cases where you have a crack in the engine block or head or metallic component, that component is to be replaced.