differential maintenance $$

[cmb6s]

Bearish, I don't know if you saw my post over on landroverforums, but apparently the AC Delco/GM part number 92184900 is the same fluid as the Castrol SAF Carbon Mod that Land Rover sells for the locking rear diff. It might be easier to obtain for you in Mexico and should certainly be cheaper than the LR stuff. A quart for me on Amazon was $22. If you opt to do your own, I think you'll need an 8mm hex socket for the locking diff fill plug and a 16mm (maybe? or 15mm?) hex key for the drain plug. Fill plug is on the passenger side at the rear of the diff.