version of the same truck? most commonly, this arrangement would be seen on something like a u-haul, which has a whimpy looking tacoma or such as the chassis, but has dual rear wheels (8 bolt or higher). the 98 ranger we have was used as some manner of box truck (they didn't put all 4 bolts back into the bed) and i need to change the diff fluid on it, which is supposedly different for "1 ton rangers" according to the service book in the glove box. i would assume that nobody would dare even trying to haul heavy with the blistering 150hp 3.0 that thing is equipped with, and that most likely, we have a regular ranger that takes regular oil. thanks.