Stop in for a cup of coffee

Impala for plugged heater core. Full of junk,including pieces if plastic from something. Hmm. go to vac down for refilling and it loses vacuum. 3800 engine has 2 plasic elbows that fail. O-ring gone on the one fitting,as well as plastic that holds it in place. Those were the chunks in heater core. All fixed now, took 1.5 hours.