Don't forget to open the low point drains since you can't blow that water out. Put the plug (or close the valves) back on/in to prevent insects from taking up home in the lines. I'm not sold on just blowing the lines out, I still prefer the RV/Marine Antifreeze. It only take 2 or 3 gallons, less than $10 to do it.
2014 Palomino Puma 25RS
2011 F-150 Super Crew XLT
Days camped in 2014 - 23
Camped 2015 - 47
Camped 2016 - 51 done - 6 more planned so far