Black Tank Valve Replacement
It seems every 2 years I need to replace the valve on the black tank because it become very difficult to pull. What am I doing wrong that causes this to happen?
Forum Discussion
How do you store the RV? Valves open or closed? After I dump and rinse the tanks before storage for any length of time, I close the valves and add a liberal dose of RV antifreeze, in the gray and black tanks, so that the valves and seals will be lubricated while the RV is sitting. It's the propylene glycol in the A/F that keeps the seals lubed. I've used it for over a decade with no problems. Valves will stick with lack of use, but once you pull/dump them a couple of times, they usually free up.
