Was this tech tip not published? I can't find it. Photobucket doesn't work very well, but I was able to get the screenshot linked above and have posted it below.
The temp gauge on my truck goes to HOT when the engine is working and drops very quickly when going downhill (esp. if you put it in neutral!). I have the 261 thermostat housing. The thermostat I have is a Stant 13928 (the one with the rubber ring). Still thinking about what to do about this...
