(((Update))) we bought it / 1995 Lance squire lite 185

specta wrote:
33 gal fresh
11 gal gray
12 gal black

Where do the expect the other 10 gallons to go??

I think most people are more concerned with not running out of freshwater. But, there are a lot of possibilities including outside showers, washing dishes outside at a campground wash out, watering a dog or other animal, etc. Also, you can easily dump grey and black on a trip or campground.