120 advise

Posted by wjames On 2016/8/12 15:04:19

Newbie to Packard
I bought a 36 120B last fall. It has an R11 overdrive and it just runs down the road great. I am really happy with the car.
The guy I got it from said it had a new core in the radiator and the motor was overhaul 10k ago.
Here is the issue
going down the road the temp gauge say and stays at 180, if I let it idle for 20 min it goes up just a little. As long as it running the temp is good
When I shut it off, the temp climbs and it burps about a quart or more of coolant out the over flow.
Are these cars are prone to this problem? Is this something that happens to these cars because of a specific thing or should I just start with the standard flushing of the rad and the block and go from there
Thanks again for your attention
W