Originally Posted by ependydad
SabreSam would be the best source for a real answer- but, given that the washer/dryer is the to the front, I'd guess that it goes to the first gray tank which is also shared by the shower and sink (in the full bath). It's a 42-gallon tank.
That would be my guess also. We are going to a campground on the beach without sewer hookup but they have a pump out service. I know my wife will have to use the washer dryer. I am thinking about getting a tote tank and trying to figure out what size.