Originally Posted by Hateful
I wouldn't go over 220. Mine comes on at about 211 to 213.It rarely comes on and I have all kinds of grill blocking.Usually gets to 206 on a warm day.
My "normal" temp is 190 degrees F. My fan comes on automatically at 220 degrees F, which I can hit when I am stuck in traffic. When I use my manual fan radiator switch, I turn it on at 211 degrees F until it falls back down to 190.
I have read that the "danger zone" is temperatures above 250 degrees F, but I'm not an authority.