and that is what i'm trying to diagnose. If I drive on a freeway, my temp bounces between 188 and 194 and never higher. In city traffic, though, it bounces between 194 and 220.
I started this thread not because I have a real bad situation, but just to bust the myth (I believe) that in some cars/engines, the well designed closed loop temperature control system bounces that much.

I believe that many people believe that this is a normal situation, and I totally disagree