coolant disappearing

The mystery of the missing coolant. Where does it go. No leaks seen. Checked out some of same q's by other owners. will try the suggestions given. Thanks to all who gave ideas in regards to other things to check. Hopefully, it's one of those. I'll check in later with a thanks if one of them.

The mystery of the missing coolant. Where does it go. No leaks seen. Checked out some of same q's by other owners. will try the suggestions given. Thanks to all who gave ideas in regards to other things to check. Hopefully, it's one of those. I'll check in later with a thanks if one of them.
Maybe a head gasket leaking if you don't see any coolant on the ground??

yep, most likely a head gasket.

How much are you losing and in what time period? Do you have white clouds, steam coming out of your tailpipe? Is there coolant in the oil? Is your car running hot? I had the top seam in my radiator fail. The coolant would boil off and leave no puddles. Fill your cooling system, then pressure test the system.