Gets better.
Rear diff, got the sort of coloured oil I would expect.
T Case, black an frothy
Gearbox, came out like cappachino
Front diff, dunno, not bothered :)
Noticed I now have a leak on the front output of the t-case so I think I might need more than a diff. Had extended breathers but I cannot pressurise the front diff, theres a seriouls leak someplace. Gearbix/tcase breather had broken on that stupid t-peice. Just re-run them all with brand new hoses with a U peice on the snorkel end. Shouldnt happen again.
So definately after a Sanata Diff, provisionally after the prop and t-case too.
Gearbox is now sweet as a nut, actually changes gear! and all nice and quiet now :)