Petrol,,,I guess my post was confusing,,my 97' Expy is 4x4,,but the 97' and 98's have the 2WD, A4WD,4H,and 4L, where as the 99's and up do not have that 2WD, selection,( I called it "the option"),so I guess that they all (the transfer case's) take the same fluid,,thats all I was asking about. And I do have the manuel for the truck,it came with all of them for that yr,,I will check it out, Thanks to all!

,,Mark