Message noted about coolant... Cheerz all! I'll probably head off to the Chevy Service early today to have it replaced...

Yeah it was most likely the valve cover gasket -- just that I couldn't recall the term I guess... The oil leaking was around the engine head. Mileage and power I feel have lessened. Regarding mixing of coolant and oil, I don't believe the mechanic has noticed any yet... I sure hope not.

I just hope after the replacement, no other problems would arise at least in the short term...