ok so heres what happened. we left wrk with heater going but then noticed it startd to blow cold air. look at gauge it was overheating. puld over popped the hood cap on rad. was loose had antifree comn out of it but was not hot. even cold to touch! so we r 1hr deep bacwoods wv need to get home so we went for well 30min into journey heater started to get really warm. keep n mind the gauge is still maxd out. few more mi got cold again. then the beast starte to run rough we wer 2mi frm home. whn she started to smoke and knock b4 it finally gave out and lost power. later there was a fire under car looked to be leaking oil. put fire out and everybody was safe! now can anybody tell me how we drove 50mi with gauge that says it was overheating but car was not smoking. or any explaintion as to what caused all this. thnx