Connecting To a Sewer Line | Rigmates RV forum

2026-08-22T02:55:54.501938+00:00

So the service rep at the rv dealer after we bought it said when emptying out the tanks we should empty a little grey, then all of the black, then the rest of the grey. I was told by a fellow camper, get rid of all the black first and then the grey. Which is the correct way?

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