Possibly filled with silastic from below by someone who didn't know how to fix the leak (or couldn't be bothered). Then you could do the Toyota fix and put a hose between the two filler plugs for continuous circulation.
Printable View
yep when I first did mine I didnt see the proper fill plug behind the handbrake. I found the plug mentioned higher up on the other side and pumped in lots of oil..we learn from errors so when I found the correct plug it just drained to the right level.it seems your transfer has been filled from that higher plug..I put different quality oil in the manual gear box.:D
Had it checked by a local mechanic and both the transfer case and the gearbox are now at the right level. It would appear that the transfer case was overfilled and the gearbox was always at the correct level. Best case scenario for me. Thanks to everyone for the advice