04 4x4 hemi. had no heat going to work today(2 degrees...yay) then went to my dads to try and see whats going on. well we flushed the radiator with water then refilled it. didnt seem to work at first because it almost overheated, i pulled to the side of the road to let it cool. after it cooled, got home and my dad thought it couldve been vapor locked. so we ran it, poured anit-freeze in it till it stopped taking it. the upper hose that goes from the t-stat to the radiator is pretty hot, almost too hot to touch and the lower one that goes into the block is luke warm. my dad and i thought that was a little odd but i wanted to see what u guys think. i have heat now and its running within parameters. sorry if this is confusing, my hands are still frozen lol