After I blow out all the water (don't forget to open the outside shower valves if you have one), I dump a cup of AF in each drain and also some down the commode.. I like to leave more in the black tank so it won't dry out so much. Water heater is emptied but no AF in that.
2014 Jayflight 24FBS Elite
2009 F150 Supercab, 5.4L ,3.73, HD Tow Package, Equal-i-zer 1K,
Progressive EMS-LCHW30, TST 507RV TPMS, Hydro Life HL-200, Maxxis 8008.
Best friend wife and dog Cooper. RETIRED 6/30/16. WOOHOO! Now the "endless summer" begins.