The upper chamber is just for the flush water. You can put as little or as much as you like in it because you will only need to flush to clear the bowl. 1 or 2 pushes of the flush will normally suffice. (We always use the flush additive it keeps things more hygenic.)i can’t find any reference in the instructions on how much liquid/water to put in the top or bottom, can anyone give me an idea on how much and anything else that needs preparing .. thanks
The VW California Club is the worlds largest resource for all owners and enthusiasts of VW California campervans.