Thanks for those last two tips. Thanks everyone for the information in this thread. I just completed winterizing the Roo23ss today! I took my time and tried to get a good understanding of the plumbing system and concept behind winterizing. I think I covered all bases during this process. I blew the lines out by using compressed air. The compressed air method was easy, but you gotta keep an eye on the pressure. At one point the pressure went up to 35-40psi.. I quickly reduced pressure. I then winterized using the RV Antifreeze. This process went smooth.
It was a very productive day with a great feeling of accomplishment!
I felt good giving the Roo a lot of TLC because it gave us a lot of joy this season.
My last question. Maybe I am thinking too much into this but...
After the pump is off and everything is completed, do you open some of the faucets to relieve the pressure? Or is the goal to keep the pressure in the lines with the antifreeze?