Im coming up on the diff and transfer case oil change I don't have the rear locker so what do I have to change and does anybody have any instructions how to do both.

 

I have previously posted the shop manual instructions. But it's no different from any other gearbox.
First crack open the fill plug so you know you can do it.
Drain from the bottom and refill from the side until it spills.
If I recall I used genuine LR transfer case fluid (more than 1 liter needed, buy 2) FCP Euro IYK500010
The front and rear diff's use 75W90 GL5 Gear Oil, I use Synthetic Red Line 57904, also from FCP Euro

 

Transfer Case Attached

 

More info attached

 

In the transfer case specs, it says to connect to software and recalibrate after filling.

Is this absolutely necessary for a standard fill?

 

I didn’t notice that instruction and did not calibrate it. I have not noticed any problem.

 

For the differential oil do you need to change the drain plug and fill Plug?? Drain/Fill Plug Service Socket Set - AGA 557116030 | FCP Euro I found these ones off of fcp euro. For the transfer case do you change aswell or what confused right now.

 

@LR disco 5 Did you change the drain plug and fill plugs? If so, did those parts work? Thanks!

 

I did not change any drain or fill plugs. I see no leakage or seepage.

 

Same here.