Originally Posted by TURBS
Why didn't you open both tank valves before filling tanks, just curious.
Btw I wouldn't rely heavily on the accuracy of your tank moniters.
08 duramax tuned n modded
2011 32bhok Sabre
2015 camping "27 nights"
Not any particular reason, we only open valves when tanks are full. Some years ago we had the grey tank open and got some pretty bad sewer gas from the park.
I did however try it;
Both tanks completely empty, open both grey valves and closed the gate valve I put on at the sewer hose connection. Ran the shower for a few minutes and checked the tank levels, Galley showed empty and bath showed 2 lights (1/3) full.
Thing is we like state parks and most don't have sewer hookups and having a total of 80 gallons of grey would allow us to stay a few days longer.