Originally Posted by turf
i have a combined grey/black tank on my bus. it works fine.
if i were to change one thing on it..... i'd pick a tank with a vertical dump pipe instead of a horizontal one. the solids kinda meander without enough slope.
Perhaps there is more than one "right way" to do it depending on how you utilize your rig. I will stick with a separate grey. I like the flexibility.
As far as the vertical dump goes, I did it that way on my last bus and loved it. Now have a "wonderful" S&S that dumps horizontally. I HATE IT for the very reason above. The sloped drain with vertical outlet is MUCH more pleasant to deal with when dumping.