We have a power steering reservoir at the rear and a rectangle for the fan motor in the right rear with the remote mounted fuel filters, and I guess the third one next to the batteries ahead of the rear one.
RVA Technical Support was very aware, and stated that the same motor operates the slide out also, and the hoses used by then Safari/Beaver were not very good quality, and may be the cause of low fluid. The RVA technical support also stated their system does not share fluid with any other system.