Curious...what is the normal high-end (hot) coolant temp for this car? I live in a very hot town, where it's common to have 100-teens throughout the summer. I noticed my coolant temp registered in the 220's, up to 230. That just can't be normal? I have never flushed or changed the coolant since I've owned the car ('94 ETC bought in '98), just topped it off from time to time. Is it possible that the original coolant has lost it's ability to cool the engine? If so, will flushing and re-filling with new coolant help keep the running temps down?