I just got my 1978 coach. I'm familiar with power steering on automobiles but not on a detroit (6V92TA). My guess is it is a larger version of the hydrolic power steering system. A reservoir, a pump and a gear box. My question is what type of fluid do I add to the reservoir? Also, does the pump supply any other hydrolic related devices? I can't think of any it would but always room to learn something so...