Quote Originally Posted by Triathlete
While crawling along at slow speeds through the Az desert on summer wheeling trips I have never had any overheating problems (even with the A/C on). The little needle never gets much higher than half way.

Are you running with a SC? After installing the SC on hot days, sitting in traffic the needle start's rising. That's why I'm going with and electric fan as well.
Also add in heat soak from the engine, cutting off that coolent is a no brainer.