kizwiki - thermostat has been replaced twice at this point. I could believe one bad thermostat but 2 with different mechanics installing them. Possible but not likely.
circuitsmith - how long would i have to let engine cool? Just trying to think of where i could go near me with a incline that wouldn’t have to sit for hours unattended.
Checked the radiator this morning, not full, added antifreeze, service engine light went off. Also regarding head gasket, I have checked oil and tailpipe (on advice from others) and oil is clean (no foam or milky color) and no stickiness on tailpipe to indicate a leak anywhere.