Hey y'all. I'll make this quick. I live in Tennessee. Bought this ol girl over the summer. Runs great, sad to find out that it has no heat, it just blows straight cold air. I have seen the thread on how to flush the core, BUT. Before I do all of that. My coolant in the res is much below cold, in the cold. Will that cause this issue? And do I need to flush the coolant before adding more? I was told by the owner if I was going to add coolant use the NEW COOLANT. Note - this fella is about 85 years old and I had no.clue what in the world he meant by that. It's a 4.9 V8 non northstar. Thanks for y'alls time!