Dave, I was referring to the drain valves outside the trailer. Our trailer has a standard toilet.
Maybe I'll just use a toothbrush and soap to make sure the grooves are clean. They do look like teflon. It's possible that any grease I add would attract gunk and make things worse. If anything, maybe a very light silicone (or teflon ?) spray like Cochise suggests. We'll see ...
|