Head gasket changed, water pump, 2 thermostats, now still getting hot? Cracked Head? How much for new one? Valve cover was leaking oil, do not know if this could cause the heating up, after overheat again antifreeze still looks clean and the right color no oil in antifreeze or vise versa. Lost only got hot once to boiling, fixed everything, don''t want to loose truck.
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Make sure the rad is flowing coolant. Can check this across rad core with infrared temp gun. You want to see temps pretty even instead of big temp ranges.
