Bing Videos
^^^ THIS video should help to answer your question.

 

The seals sit on the entrance to the diff housing (pumpkin). PLEASE source ONLY OEM from your dealership according to your VIN.
It seems there are minor differences. Unless you want to redo it?

 

Anyone can tell me what type of gear oil to put in the diffs?

 

75W90 Synthetic, both front and rear. If you tow, then 75W140 in the rear diff.

 

Thank you so much, any idea on quantity?

 

I use Lucas, but any major brand is O.K. I am in hot as hell Phoenix Arizona USA. Lucas hold up really good in this extreme heat.

 

Any idea how much oil I need ?

 

The below capacities are based on new axle housings, that has not been pre-filled with lube. So, yours, will take less quantity of Lube.

The lubrication capacity for the Dana 30 in a 2013 Jeep Wrangler is approximately 1.3 to 1.5 quarts. It is recommended to fill the differential until the fluid starts to dribble out of the fill hole, which typically takes about 1 quart.
Jeep Wrangler Forum+3

Rear Differential: Requires about 4.75 pints (2.375 quarts) of fluid. Make sure to fill the fluid until it begins to run out of the fill hole

 

Thank you so much

 

You are welcome, Sir!

 

Front axel seal on the 'short end' passenger side on a RHD was weeping 3 years back.
Had previously been replaced with a Crown brand.
Replaced both with new Mopar two part seals.
Quite an operation teasing out the diff gearing to access them and scraping the axel tubes free of debris, which I left to someone whose done a few.
I know my limitations.
I unusually use Red Line 75W-140 to fill them.

 

I am getting ready to place the order for my front axles, should I just replace the seals or the whole axles while taking it apart?
as for bearings, what should I do get
2013 Sahara unlimited
Looking at axles, wow so many choices, I am getting lost in this, what should I stay away from? What is decent and what do you all recommend? I mainly use it as a daily y