Just like Turbs said, but also remember the Spray Ports if you haven them, along with outside kitchen and washer and dryer preps. Drain all low points. Front, rear and your fresh water tank. You should have a hose that will pull out from the docking station. Look down under the water filter and you will see a valve. Turn it to off, take cap off of hose and put it into antifreeze. Turn on water pump and pump the pink stuff through all lines.
2012 Sandpiper 365SAQ weighing @ 15k, Onan, 2nd air, slide toppers, TST
2013 F350 6.7L Lariat 4x4 CC DRW,Viair 1007, Ride-Rites, Edge CTS, B&W
2001 Chevy 3500CC DRW 4x4, 8.1L, 4.10 gears w/ Detroit TrueTrac
2001 Ford Excursion Limited 4x4 7.3L,V/B Spring Mod, ProComps, Hellwig Swaybar, & other 'Necessities'