I have received the following message today: Please fill up a maximum of 1 litre of oil. Continued. I have now 22500km on the speedometer. Would you have the oil service done right now and not refill at all? Or sometimes refill and drive up to 30000km? Should the oil, if I now refill, be bought. I already thought that with normal driving (no unnecessary high speeds, engine warm running) you can easily drive up to almost 30000km without in the meantime Is that a misconception?