We're currently in Montana on our second to last night of our 3-week road trip and I discovered something new just a couple of days ago.
Our outside kitchen sink drains into the black tank :E.
I only discovered it when I turned on the outside sink to flush the fresh water tank. I left the grey water valve open and was surprised when water backed up in the sink. When I opened the black tank valve, the water drained.
Has anyone confirmed that their outside sink drains into the grey tank and NOT the black? :h
Should I get my dealer to fix it? Would very much be involved in opening up the enclosed underbelly?