From the bloggers at Roadtreking.
It was a hot fall day when we first noticed the smell. There was no doubt about the source – we had dumped far too many black tanks to have any question. The odor definitely came from the toilet. We checked the blade seal on toilet flap. Yes, it held water in the toilet bowl just fine. That meant it was the flange seal below the toilet that was allowing flumes to escape.
We ordered the flange seal for the Thetford Aqua-Magic IV from Amazon and set it aside until spring.
To read the full story by Roadtreking, click here.