Axial & transfer case oil change

Sorry for all the posts but just bought the car and need input. The car has about 15000 miles and the manual says these have to be changed, and from reading the posts royal purple seems to be a good product, was wondering if you guys could tell me which royal purple product to use for what and how much I would need to order.

thanks

Hi,

I'm having problem locating transfer case fill and drain plugs. Could you kindly explain to me where they are located? I was able to find tranny, tod, front/real axle, oil plugs.