Transfer Box Oil for 1993 2.8l 4x4 super custom

Hi - Does any one know what oil is used in the transfer box on the back of the gear box on a 1993 2.8l 4x4 super custom (LH107) and also how much you need for a change.
My local toyota dealer had a stab at 75w-90 but wern't too sure.

Thanks

Thats sound right....its also what I used 8 years ago...from memory there may be change from 2.5ltrs

Thank you - that should give me a nice head start on the job