[Phantom]

I would go with what ever in the newest ATF oil that you use. Royal Purple ATF I'm not sure about you should do research but i thought that most of there stuff was for performance and to be changed out often I could be wrong about that.

I'm not exactly sure how it the draining is performed on your turck but usually one would loosen the bolts on the trans pan and take the back bolts with the car tilted let the oil drain remove and replace the trans filter then refill. You will probably want to the similar to the rear diff.