I have heard several ideas about why I have coolant in my oil, and oil
in the bottom of the expansion tank. 

Is my oil cooler to blame? Broken head stud? Bad cylinder sealing
gaskets (green and black)? 

After looking the archives, I thought it probably was a bad oil cooler,
but now I am not sure after talking to a fellow 
Vanagonite near me (Zoran in Golden, CO).

I would like to hear from those folks who have had this problem, oil and
coolant mixing, and what the problem was, and how
you fixed it.

Thanks, and have a great weekend!

Andy
Lakewood, CO
1987 Wolfsburg GL
1992 GTi