1. Drive around, jack up the car and put it on stands.
2. Loosen the drain plug (see subsection 2.33) and drain the oil into a clean pan. Close the plug and tighten.
3. Check for solid particles in the drained oil, indicating that the gearbox is worn and needs to be repaired in the near future.
4. Unscrew the filler plug and fill in fresh oil with a syringe or syringe. The oil level should reach the lower edge of the hole. Close the cork.
5. Lower the car. Drive, check the level and add oil if necessary.