I would like this information as well. I have 2 of the superchargers that I am trying to hook up to use as screw compressor and screw expander and need to know where to hook oil feed line. Does oil need to be under pressure? If so, where is oil return? I read about people having issues blowing out oil seals. Does it need to have vacuum hooked up to it? These will not be driving an engine and will be working in a room temperature environment.