kellem wrote:
Highly doubt a sink is tied into black tank, no way.
What your experiencing is hot temps and grey tank is extinguishing odor.
Our grey tank is just as pungent as black tank during hot months.
Just dump a cup of bleach into kitchen sink and let it slosh around during travel......we've found it's always the dish water vs shower water incase you have 2 gray tanks.
Sinks sometimes ARE plumbed into the black tank. My previous Winnebago MH had the bathroom sink plumbed like that. Made adding water to the black tank a cinch. Just turn on the bathroom sink tap.
Don't mistake the fact that you have never seen it as it is never done.