My auto transfer case is leaking badly from the case seam. I'm not sure why but it is losing a quart of fluid in a couple of days. At $8 a quart for the GM Autotrak stuff, I can't keep this up for long. Does anyone know of an equivalent fluid that will work until I can get this resolved? Is there an exploded view or diagram available in case I want to do this myself? I have the apptitude and tools to do the work, but no experience with auto transfer cases and I don't want to break it open the wrong way and have stuff fall out of place and not know where it goes back. Is there a vent on this case, I couldn't find one?
Any help would be appreciated.

'01, 1500, Z71 with auto transfer case(264 model?)