I could use some help easing my mind about the pressurization system on the IV-P.   

What keeps a degraded or faulty turbocharger from spilling oil into the intake side of the bearing housing and contaminating the cabin air through the pressurization system?  I’ve flown a lot in a Mooney with a TSIO-360 and have seen a couple of turbos have problems that resulted in throwing a significant amount of engine oil into the intercoolers.  Seems like that would make for a bad day in an LIVP. 

Thanks,

                Karl