Central Illinois?
Champaign area? Effingham? Springfield?
If you are loosing coolant and you can't see where it is leaking, then it is probably the head gasket.
Are you getting coolant in the oil or oil in the coolant?
The best independent mechanic, I know of, in the area, is Oilhammer in Pacific, MO
www.risingsunautomotive.com
but there are others that may travel.