Grey Tank Valve Open or Close
When you spend 1 to 5 months in a park, do you leave grey valve open or close. When close have to empty often. Does it damage anything to leave open except when you want it full to dump with black t...
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We leave it open until the black tank is half full, that way I have a half full gray tank to flush the hose after dumping the black. Have done it that way for years.
