Originally Posted by Karl4Cat
Yes, the rear bath's sink also drains into the rear black tank.
Love the info on here. Was talking to a sales guy this weekend and am considering adding a 1/2 bath in my XLR garage. I mentioned I already have washer/ dryer hookup so plumbing is existing (me meaning hot and cold water). he says yeah it will work drains into existing black tank. Now I'm not in my camper but I believe that's a 2" drain. Hmmmm. 3 inch toilet into a 2 inch pipe
. And dwhit, since I am in PA I'm a little worried too. Always heard s^#@t flows downhill