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...
Forum Discussion
I started out leaving mine closed but got tired of dumping it every three days. For years I have left it open until three days before I am going to dump the black.
