BMW X6, E71 / E72 (EU)

Additional Notes

• The BMW X6 E71/E72 transfer case fluid specifications distinguish between two fill types: dry fill and service fill. Dry fill refers to the total fluid capacity of a completely empty unit, while service fill reflects the smaller volume needed when fluid is being replaced during routine maintenance with residual fluid still present in the system.
• For the X6 M covering 2008-2012, the xDrive transfer box carries a dry fill capacity of 0.9 liter and a service fill capacity of 0.8 liter, meaning approximately 0.1 liter of fluid remains in the unit after a standard drain procedure.
• The X6 M specification for 2012-2014 carries identical dry and service fill values of 0.9 liter and 0.8 liter respectively, matching the earlier X6 M generation exactly despite representing a separate model year range entry.
• The xDrive35i from 2008-2012 uses a noticeably smaller transfer box, with a dry fill capacity of 0.7 liter and a service fill of 0.6 liter. The 0.1-liter difference between dry and service fill mirrors the same retained-fluid pattern seen in the X6 M entries.
• The X6 xDrive50i covering 2012-2014 shares the same 0.7-liter dry fill and 0.6-liter service fill figures as the xDrive35i, indicating both models use a transfer box of equivalent fluid capacity despite differing engine configurations.
• All five specification rows carry a normal use condition, meaning none of the listed transfer case fluid capacities are associated with a severe-duty or first-change-only service scenario.
• The X6 M transfer box holds 0.2 liter more fluid at dry fill than the xDrive35i and xDrive50i units, a difference that reflects a physically larger or differently designed transfer case in the M variant's xDrive system.