Originally Posted by TexasRVer53
Thanks. That's exactly what I thought. I've never left the gray open either because I was afraid of getting smell back into the trailer from the sewer. Next time I'll try leaving the gray open until our last day and if it gets 'stinky' in the trailer, I can close it.
I always closed the gray tank valve (black tank closed always until dumped) for the same reason as the black tank (food getting stuck to walls and sensors) UNTIL we had the grand kids stay with us and someone did not close the bathroom sink tap all the way.
Watta mess ...
Luckily I spotted the water coming down the steps before any damage was done.
Lou and Laura with Bella - German Short Hair Pointer
2008 GMC Sierra 2500HD Crewcab SB Allison Duramax
2010 Flagstaff 8526RLWS - Superglide 3300
HAM CALLSIGN - KC3FFW