See also:

Lubricants
Engine oil For the checking, adding and replacing procedure or other details, refer to “Engine oil” F11-12. NOTE The procedure for changing the engine oil and oil filter should be performed by ...

Rear differential gear oil
There is no rear differential gear oil level gauge. To check the rear differential gear oil level, we recommend that you consult your SUBARU dealer for inspection. ...

Limited slip differential (LSD) (STI)
The LSD provides optimum distribution of power according to the difference in revolutions between the right and left wheels that may be caused by certain driving conditions, thereby improving driving ...