Awesome pics! Is your thermostat housing chrome? I have always had problems with them leaking. I ended up taking mine off and ruffing up the surface on the bottom then used some "right-stuff" sealer as my gasket. No leaks anymore!
Yes, it is a chrome one. It has a thicker base than the previous one, and I was hoping it would solve the leak. Until recently it hadn't leaked.
Time to drain the system again, and get a new gasket. I'll scuff it up if I haven't already done that.
Then I have to find where the oil is coming from. Could be the rear breather on the valve cover. It needs an evac system. Doesn't have a PCV valve, just 4 valve cover breathers.
