Black and gray sewer valves open or closed
I have a 2016 ventana I store it in a garage. My question is should I store it with the black and gray valves open or closed? Keep in mind I have properly flushed and cleaned both tanks. I have cur...
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I leave them closed with a LITTLE water in there to keep the seals from drying out and making the valves difficult to slide. I have heard that some even put a little vegetable oil in for the same purpose.
