The reason I don't want to add antifreeze back is because I had a hard time doing it the first time.
on the 3 TTs that I have had, winterizing the plumbing consists of:
1 open the low water drains,
2 open the faucets
3 drain the hot water tank
4 drain all the tanks
Never used anti-freeze. If I want to go for a quick winter week-end, i fill up the tanks, enjoy the week-end and the repeat steps 1-4 when I get home. Never had a burst pipe. The PEX piping that is used today does have a bit of flexibility (compared to the copper piping)