On Sun, 05 Aug 2012 22:36:15 -0400, Ed Pawlowski wrote:

On Sun, 05 Aug 2012 12:34:30 -0400, "
wrote:


That's a good point. I've had toilet traps dry out and let sewer gasses into
the room. Antifreeze might help avoid that. I believe propylene glycol has a
pretty low vapor pressure, anyway.

We have an unused rest room at work and it would dry up every couple
of months. I poured coking oil in it and it has been that way for
about a year now.

Doesn't it go rancid?