Got a 95 4x4 sport 3.9 dakota. It has ran hot once, my windshield fogged up. I was told that was the heater core, I ran liquid aluminum through it and it was fine. Now a few weeks later, squeeking from the pulley system and the temp gage closer to the hot line then I like and the first time this happend coolant spewed out from under radiator cap. That's the only time that happened. I've been told water pump, thermostat, or whatever. I don't know what it could be, not sure if people I know are really as smart as they clam. Can anyone help?