Cardan gear
Every 15,000 km, check the condition of the protective covers.
Rear axle
Every 15,000 km, check the oil level in the rear axle.
Change the oil in the rear axle every 30,000 km. Do this immediately after a ride while the oil is warm. Pour fresh oil through the filler hole to the level of the lower edge of the hole.
![](https://www.bmwman.ru/img/ser3/0011.jpg)