Hi Guys, I have a problem with my 68 Coronet that I'm hoping someone can help me with. I recently purchased the car and its been great except for this issue with the heater. After the car warms up steam starts coming out of the grill near the windshield and the inside vents. This continues for several minutes and then stops, for the rest of the day its all good. I don't drive the car very much and I'm assuming I have a small internal leak. I don't see any signs of water leaking or smell anything. I plan on replacing the heater with an aftermarket AC system but until then and short of pulling the heater is there something else I might try? Pulling the heater sounds pretty straight forward but having never done it I'd appreciate some feedback on what I might expect?