Re: 3rd sewer valve is very difficult to open Reply #25 – March 23, 2011, 09:12:25 pm I like this suggestion, easy to do and inexpensive. Is that Dawn dish soap? Quote The best lubricant for rubber is soap. Once a year I split a bottle of Dawn between the two tanks, let that brew until my first dump station visit. We also use extra soap to wash dishes & bathe, & for the black tank, we just add some dawn between trips to the dump station. I've never had a problem in many years, and the valves operate like Goerge said, a hot knife through soft butter... Quote Selected
Re: 3rd sewer valve is very difficult to open Reply #26 – March 24, 2011, 09:28:12 am Wyatt,Dawn is a brand of liquid dish detergent. It is even used to remove wax from the fiberglass. Quote Selected
Topic: 3rd sewer valve is very difficult to open