Please help a 60 owner as he attempts to become more mechanically self sufficient......My 60 overheated badly, went into the red for 30 seconds or so before I could pull over. Steamed a little after I stopped and vented coolant. Do I worry about engine damage? Never had overheating problems before. Radiator is less than 1 year old. Belts/Hoses are good. How can I tell if the probem is the thermostat, waterpump or something else?