Duh I did forget the toilet valve. May have to replace that too. I had put some pink in the traps earlier. Didn't have enough to pull through the plumbing though. I didn't read the water heater bypass valve correctly and got some pink stuff in there before I realized it. I have a short system so usually only need less than a gallon but sucked up more than half before I realized it was going into the hot water heater so I used the whole gallon.
I found a bottle of water and soda and a can of beer under the sink so it had not frozen solid yet. I do think mine needs to be drained and protected by antifreeze. Too many places for water to get caught.
The temps are supposed to go down to just above zero in the next night or two.