Most RV’ers know that it’s essential to empty and clean your grey and black holding tanks when storing your RV for the winter months. You’re probably also aware that you should put some RV Antifreeze in your holding tanks, since you can’t be sure that there isn’t some water left. A question we are asked a lot is “Should I leave my valves open or closed when storing my RV?” The valves should be left in the open position which allows the seals to be in a relaxed position over the winter as opposed to pressing on the gate, causing a potential for stiction.
Have questions about winterizing the rest of your RV? Check out this article from The RV Doctor.