Noisy T-case?

Just picked up my 96 XJ, At very low speeds I can hear what Im guessing to be the T-case in action. Just a slight metallic spinning noise. Obviously if the sound gets worse Ill look into it more.

I called the PO and he told me that he was aware of the sound and that it was the T-case but that he check the whole thing out and oiled it up. Replaced the axles and he thinks its the U-joints.

Does this sound normal to you guys?

Thanks!

Anyone? Im a noob here lol

slight metallic spinning noise?(please be more specific) Tapping, clunking, banging, popping, rubbing, scratching. does it change with rpm?

you can remove front d/s, that will tell a lot
raise all 4 wheels off the ground put in gear and have a look around underneath, have someone help for safty(jeep falls off jackstands)

What kind of fluid is in the case? It needs to be ATF. Gear oil will destroy the TC.

Thanks guys, Ill get in touch with the PO.

Its not a loud noise, Its like I can hear the axles spinning. Its not high pitched and it doesnt get louder with RPM's. I can only hear it when pulling away from stop signs and driving into parking lots and such.

The PO had this to say:

"T-Case was rebuilt 4k ago and had the fliuds changed for Decron-III / Mercon. I Changed all the fluids every 25k."