BMW X3 Service & Repair Manual: Approved final drive oils for front and rear axle final drives with and without limited slip or viscous coupling

2.0 APPROVED FINAL DRIVE OILS FOR FRONT AND REAR AXLE FINAL DRIVES WITH AND WITHOUT LIMITED SLIP OR VISCOUS COUPLING

LIMITED SLIP DIFFERENTIALS

With the introduction of the Z3 roadster a new synthetic final drive oil for all vehicles with a multi-plate limited-slip differential has been released. The new BMW final drive oil SAF-XJ will replace the old final drive oil SAF-XLS.

The SAF-XLS final drive oil is not to be used in the final drive of the Z3 roadster.

Use only the SAF-XJ in the final drive of the Z3 roadster.

NOTE: If a non-limited slip differential oil is used in a limited slip differential a whining or chattering sound can be heard on very tight turns and will eventually result in a failure of the differential.

LIMITED SLIP DIFFERENTIALS REFERENCE CHART

MOTORSPORT VEHICLES

MOTORSPORT VEHICLES REFERENCE CHART

NON LIMITED SLIP DIFFERENTIALS

NON LIMITED SLIP DIFFERENTIALS REFERENCE CHART

E71 X6 XDRIVE35I AND X6 XDRIVE50I: REAR DIFFERENTIAL WITH SUPERPOSING GEAR UNITS (QMVH)

The rear differential assembly consists of three separate filler plugs, one in the center for the angle drive with differential gear and one additional filler plug on each of the left and right superposing gear units.

Angle drive with differential gear (center filler plug): PN 83 22 9 407 768 (SAF-XO)
Superposing gear units (two outer filler plugs): PN 83 12 0 445 838 (SAF-CARBON)