Differential question

[crazyjr]

Unless while working the diff you hear a click or feel it lock, it should be good. If no locking or noise, then the oil might be old and thicker with dirt or metal from the diffs (always a bit of wear, even with oil) I would check everything before just filling with new oil though.

If you plan to order parts anyways, a few diff parts, as spares, wouldn't hurt