Drain Valve Lube
I used Silicone spray on the valves in the old trailer to keep the seals from sticking. They were readily accessible. The new trailer has them stuck way up in the covered "basement". IIRC somebody ...
Forum Discussion
Are we talking about the valve one pulls open to empty the gray/bIlack tanks? Is the oil added into the tank from the sink/toilet outlet? From the outside, the valve is not exposed, so not sure how one would add it from outside.
