The chrysler manual says to use ATF+3 in the transfer case so what fluid should I use by modern standards?

Update: 2000-2001 dodge dakota slt 5 speed manual 4wd
Update 2: This is for the transfer case.
Update 3: It says in the book dexron 3 or atf+3 but atf+3 was recomended so will atf+4 work or no?
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