I am the second owner of a 2005 Fleetwood Southwind. I suspect there is some sludge or grease buildup that causes the gray tank to drain slowly. Can anyone recommend something to break it up?
How about one of those attachments (name escapes me, CRS victim) that allows one to back flush the tanks thinking that there might be a buildup in the piping. I'd back flush for 10 seconds at first to see what comes out and increase time if necessary.
About Technical Issues
Having RV issues? Connect with others who have been in your shoes.24,263 PostsLatest Activity: Jun 13, 2025