Newbie question - Winterize or not

You say "average", but all it takes is one night with a hard freeze and you'll wish you had winterized.
I have a 25 foot travel trailer and it only takes me ten minutes and one gallon of the pink stuff.
I don't waste my time blowing out the lines. Pumping pink stuff through them will take care of that.

Jack L

We only low point drain our trailer at the end of season, then pour antifreeze down the traps and into toilet to protect seal. Leave your spickots open to allow for expansion. We live in the cold Northeast and have never had a problem with freeze-up. Been doing it this way for almost 30 yrs.

We get cold snaps a lot lower then that, I can recall lows of 0 in your area. This will cause issues with the water lines.

You should be able to get by with draining and blowing out the lines, but doing nothing... well every friend that has tried that now has leaking, or wreaked, water lines.

Howdy from Dallas.
For winterizing I would suggest you blow out the lines using an air compressor set to about 20PSI. Once that is done pour about a cup of RV antifreeze down each drain and add a couple of cups to the toilet. Be sure to open all valves, and leave the low point drains open all winter. Other than dumping any liquid in the tanks you should be done.