B.O. Plenty wrote:
Think about this..adding oil to the toilet will only allow the oil to float on the water above the seal, doing nothing. Go around the edge with a toilet brush while holding the toilet open. Then close the flap, and with your fingers, press down on the rubber seal all the way around to reseat the seal. After all that..pour a pan of boiling hot water into the bowl and let it sit until cool. Problem will be fixed. This info comes right out of the Dometic manual. This has worked for me EVERY time!
B.O.
He stated when winterizing. You would have the water off then flush so there's no water in bowl.
I just fixed mine by cleaning and spraying some silicone lube in about 1/4" (without water) and let it sit overnight.
JKaz