So I recently purchased a 2000 F250. I had a ScangaugeII from my last truck which was a 2003 F350 with the 6.0. Once I got water temp programing figured out I was super alarmed to see it go up to 250 degrees! I have Auto Ingenuity on my laptop so I hooked it and went for test drive, with the A/C on and the overdrive turned off it went all the up to 275 on the highway! The crazy thing is the idiot dash gauge never moved a bit. Am I missing something? I also never heard the fan clutch engage. If it was really running that hot it should have burned to the ground! I can see needing a fan clutch but still seems weird. By the way the EOT seems normal.