Originally Posted by Twip

i dont know why i didnt think about this until right now but, you could just pull the fill plug on the transfer case and stick your finger in there. dont worry, its not going to cut off your finger. get some fluid on there and give it a smell. when you are done with that, wash your hands and then go look in the mirror so you can get it off the end of your nose. lol.
if it smells like atf, then you know what you need, same thing with the gear oil. your front diff is gear oil, but i dont know how much. just buy a gallon of it and do the rear end first and refill it. then do the front and if its not full when the gallon is empty, (it should be, but like i said, im not sure) you can drive it to the store at that point in 2wd and get anything that you need. just dont forget to top it off.

Originally Posted by Fullsizeon38s

how do I drain the rear end? do I have to pop the cover off? then how do I refill it? I know the front diff and transfer case has fill and drain plug