At first I thought the coolant was mixing with oil. But after common sense took hold again, I realized the engine would have been performing poorly if the head gasket took a dump. All this while, the engine has been performing exceedingly well. That should have told me this was nothing to worry about.
I posted this for everyone else to see as we head into the winter months and a question is asked similar to my experience. Note: I did not clean the oil cap at all, I replaced the cap with the "milk" intact and took it for the drive. The engine cleaned itself, like my research said it would.
The pcv valve should be cleaned now as well.
Currently owned German vehicles:
2003 Volkswagen Passat GLX 2.8l
2003 BMW X5
2001 BMW R1200c (motorrad)
Previously owned German vehicles:
1996 VW Golf GL
1975 VW Microbus
1981 BMW 528i
1987, 1989, 1990, 1991 BMW 535i
1990 BMW 525i
1998 BMW 328i
1997 BMW 740il
"Non Sibi Sed Patriae"