what fluid does the 98 jeep GC quadratrac 249 case use?

I assume this is the 249 case, it has 240-1 on the id tag so not 100% on it. seems to be HI-N-LO (I have not been able to shift it yet, both engine and trans mounts are shot and has linkage pulled out of bushing/alinement.

I have been reading but cant seem to find much for type of fluid.

also, I see the fill/drain plugs on the back of case. is there any other drain spots that need to be opened?

I watched a video and 1 plug had a spring/plunger piece for a detent maybe? will this plug remove the last of the fluid?

TIA