[Dunrollin]

Here is all I see in the Coffee Table Book:

Crankcase Vent Oil Separator
The crankcase vent oil separator is attached to the right rear of the valve cover. The engine crankcase vent oil separator separates the oil from crankcase vapors and returns the oil to the crankcase through the center of the engine block. The vapors are routed to the air tube before the turbo inlet.

It doesn't seem like what you are referring to though. The Coffee Table book covers all the engine's sustems well.

 

[Dunrollin]

Coffee Table Book:

https://www.forddoctorsdts.com/coffeetablebooks.html/

Great reading and lots of pictures.