My Rig is 80 Fresh, 36 On Black, Gray and Wash.. Since I use the park shower and I'm now RVing solo I do not often use the Wash tank (Wash is gray without the kitchen sink... Shower and lavs only in this RV, washing machine if I had one).
I go over a week on 80 gallons, Wife and I went 8 days w/o dumping using methods such as you cite. By my self I dump usually once a week or less. Usually on Sat or Sun or Mon (In the winter I do my CG-CG thing on Sunday. and usually dump the sat before I go to Seneca and 8 days later when I get back.. Summers I do the camp to camp during the week and am not as "rushed" on move day so I dump then)
Many folks do not understand how the tanks work.. But work they do.. I know people who, for example, won't drink water from the storage tank.. ALL my water comes from the storage tank.. The "City water" here (really is city water) is over chlorinated, and thus I fill the 80 gallon tank and let it sit for a few minutes (At least as long as it takes me to get back inside) and by then the water near the tank outlet has dissipated enough bleach to be decent.
(Learned that from the instructions for caring for pet fish by the way.. Amazing what you learn when you read manuals).
