Confirmed from my change:

Trans takes 2 quarts (MTL)

Transfer Case takes less than a quart (Redline D4 ATF)

Diffs take 3 quarts between both (Redline 75w-90 gear oil

Engine oil for M54 between 7.5-8 quarts (mine takes 8)

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2018 Ram 2500 6.7L Cummins 68RFE
19k miles -Bright White/Black - Big Horn Sport - Crew Cab Short Bed
2013 X5 35D (CEO's) - Born on 5/17/2013 -
82k miles - Alpine White/Cinnamon Brown/Premium Pkg, Sport Activity/Premium Pkg and Sound/20" Style 214/Running Boards