When I did my xfer case it took 3 quarts to the fill hole. My truck is leveled by 2"s, I make sure it is 2"s nose down when I change the transmission and xfer case fluids to compensate for the leveling kit. The repair manual says it take 2-1/2 quarts, so do many of the other references, Amsoils site says 2-1/2 quarts also.
CD