OK, Took stat out and placed in 180 degree water. It did open. I started the truck with out it in and it ran fine and the temp gauge needle was between the left dot and middle dot.
The coldest winter I ever saw was a summer I spent in San Francisco M. Twain If at first you don't succeed...skydiving is not for you! If you don't like my carbon foot print, stick it up your Prius!!