I always wondered why they put 110 gal fresh, 40 grey and 40 black, am I supposed to drink 30 gallons of water ??
I guess the outside shower would account for some, if you have a pressure washer that would account for some more. I used to carry extra water, but I quit hauling it around after never using all the fresh water and filling the grey to overflow on a 5 day trip. One of the rigs we have looked at has a 170 gal fresh and 50/50 grey/black, where does the extra 70 gallons go ??
My Son ripped off the tank drain on His T T, we plugged it up and fed him some water on a 4 day trip and still never ran out.