OK, a while back the temp gauge pegged. Pulled into Walmart lot, added 1.5 gallons 50/50 mix, drove home (3 miles), wound up adding another 1.5 gallons.
Started it, steam from behind engine + lots billowing from tailpipe + radiator starts leaking when pressurized. Water pump intermittently screeches, but not for the first 2 min or so. Was gonna pull the drivetrain & dump the shell, but I got adventurous today.
Car gas been sitting for 2 months, I fired it up today for compression test:
125-130-130-125. Compression's good, spark plugs good, no coolant in oil or oil in coolant. Radiator was empty in <5 min. of running but the driveway was bone dry! Barely noticeable steam vapors from tailpipe >5 min after shutdown.
OK, obviously the car is burning all the coolant but from WHERE? Nothing obvious externally...I may try jacking it up & running it over the weekend but I doubt I'll find anything.