31 50... Changing front differential oil

WARNING: DANGER OF POISONING if oil is ingested/absorbed through the skin!
RISK OF INJURY if oil comes into contact with eyes and skin!

IMPORTANT: Use only the approved front differential oil in this front differential.
Failure to comply with this requirement will result in serious damage to the differential!

NOTE: Only change oil when front differential is at normal operating temperature.

Necessary preliminary tasks:

Remove REINFORCEMENT PLATE
Remove STEERING GEAR COVER AT TOP LEFT

Checking/correcting front differential oil level:

Undo oil filler plug (1).

Check front differential oil level.

If necessary, pour in front differential oil up to lower edge of opening for oil filler plug (1).

Installation:

Replace oil filler plug.

Tightening torque 31 50 2AZ .

Fig 1: Identifying Oil Filler Plug

Courtesy of BMW OF NORTH AMERICA, INC.

Changing front differential oil:

Place oil collecting apparatus underneath.

Remove oil drain plug (1).

Drain front differential oil.

Installation:

Replace oil drain plug.

Tightening torque 31 50 2AZ .

Undo oil filler plug (2).

Pour in front differential oil up to lower edge of opening for oil filler plug (2).

Installation:

Replace oil filler plug.

Tightening torque 31 50 2AZ .

Fig 2: Identifying Oil Filler And Drain Plug

Courtesy of BMW OF NORTH AMERICA, INC.