Hi DRS......

Just a recommendation. On the differentials, I really like the Amsoil Severe Gear 75W-90. If you tow alot, I would recommend their 75W-110.

On the tranny oil, it's subjective. If you intend to stick with the OEM, go to JIE.com - it should be cheaper than the Esso bottle from Bavarian Motorsports..

I assume you're out of warranty like me, I would consider at Essso 71141 incompatible fluid. Fluid is subjective....but I'm doing a pan drop/filter change this weekend myself with Amsoil Universal ATF