#1. 99.9% do not ..... some with ½ bath do. Also some outside kitchens.
#2. Should be into main gray tank.
#3. With full hookups I leave my gray tanks open until the day that I will be dumping my black tank. Then open grays to flush hose. I leave a high spot in my sewer hose to create a trap so sewer fumes do not enter my gray tanks while they are open. My washer and drier are coin operated and in a building at the camp ground so any other advise I am useless.
Travel safely, Hank
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Hank & Lynn
2007 Cougar 290RKS, E-Z Flex, 16" XPS RIBs ( SOLD
.. Gonna miss her ... looking for new 5r)
2004.5 Dodge 2500 QC, LB, 5.9HO, WestTach gauges, Ride-Rite