[xcaliber81]

I am going to change the fluids in both front and rear differentials tonight, my question is what is the proper way to reseal it with rtv, do I put a bead on the diff cover and around the bolts and put.it on and fill it or do I evenly apply to both surfaces then close it up and fill?

 

[xcaliber81]

Oops I mean proper lol

 

[ImperialCrown]

Clean the remaining old RTV from the mating surfaces, remove all traces of hypoid oil and seal the pan side with ~ 1/8" bead of sealer around the bolt holes.
http://www.handymanlyness.com/archives/auto/maintenance/differential/01/rear_gm.html

Mopar makes a red RTV specially formulated to seal differentials and other components using 75W-90. Other RTV's may break down.
http://www.jeep4x4center.com/mopar-axle-rtv-3-oz-tube-5013477aa.html
http://www.jeep4x4center.com/mopar-synthetic-gear-lubricant-sae-75w-90-1-quart-32-oz-bottle-5102232aa.html

You can probably find better prices than this.