FensterRV wrote:
Let me expand on that question. Do you use the sewer rinse valve for the tanks and for how long? Do you have to be careful with water pressure too like you do on the fresh tanks?
I used the tank flush this past weekend and it worked very well. No pressure issues to worry about since the flush hose is open in the tank and will never build up any excess pressure.
I have a clear elbow on my sewer hose and I could see chunks being flushed out that that were left behind from when I dumped.
With that said the flush does not have the volume to flush out the sewer hose like dumping the grey tank does.
My procedure is dump black then use the fresh water hose till I see it running clear. Close the black valve and dump the grey.