Looking change the front and rear diff fluids this weekend. What fluid do you guys recommended? D30/8.25

I use 85W-140 Valvoline. If you have a limited slip in the rear be sure to add a bottle of friction modifier.

80W-90 is fine.

O'Reily's, Walmart, whatever.

Jeep recommends the thicker 85-140 weight if you tow, and the thinner 75/80-90 if not. In reality, both are most likely going to be perfectly fine.

Awesome....thanks for the info