Prestone rv pink antifreeze

jfkmk wrote:

Cummins12V98 wrote:

Depends, some vegetable oil in the drain after closing it out keeps the odors at bay. Also a small amount to seal the toilet bowl.

I'd be more concerned about water freezing in the trap than some odors.

I did forget the traps ONCE! Used antifreeze next time. But veggie oil will work just fine.