I'm gonna do a fluid flush on rear Diff and transfer case. My question is what kind of oil do I need and about how much. Thanks guys I'm new to this and have never done it. Is the drain and fill ports on the transfer case pretty easy to find? And do I have to remove the Diff cover to drain? And is the fill port on the top?

 

Well one you remove the cover to drain it and the full port in on the top right corner clean it out real well as especially clean the magnet bolt it back up and and use the red silicone... Works the best in my opinion also I used 80w90 synthetic gear oil but it's changed so much I think you can use 75w140 synthetic but I have 80w90 on bulk at my dealership so I took advantage