All depends on the locations of the two Gray tanks. Our Bath/Laundry tank is in the Drop Down frame section next to the Black, our Galley is above the axles, at least a 10 inch difference. So if we tried that everything from the Galley would flow into the Bath/Laundry tank, with no way to push water uphill into the Galley tank.
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Michelle & Ann
2018 Chevy 3500HD High Country DRW 4X4 Crew Cab w/Duramax/Allison, Formally 2010 Montana 2955RL, Now Loaded 2016 SOB, Mor/ryde IS, Disc Brakes & Pin Box, Comfort Ride Hitch, Sailun 17.5 Tires.
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