Oil disapears from the engine and the coolant tank overflows with a white mix of oil and coolant. I don`t know much about Porsche`s so I don`t know which one is most likely happening:
- crack in block
- crack in head
- headgasket
- leak in oil-coolant heat exchager (if this car has such a thing)
I guess either way the engine has to be dropped.
Any help would be appriciated. Thanks.

 

I think that the reason for no reply, is that you answer your self there.. it can be any of these things.