Hi Omigemeinde, on my way to work a 10km construction site was set up where you can only drive at a speed of 80km/h. At the current diesel prices I take this option to keep my consumption low. Since driving there, my on-board computer (Opel Omega 2.2DTI (BJ2003)) shows “Check oil level”. If I step on it again after the construction site and drive 120km/h or faster the message is gone again. The message also always comes at the end of the construction site. can it be that the oil is distributed differently at the low speed? I have pulled out the oil test rod several times and my oil level is always on the Max. mark. There are already some posts on this topic, but the on-board computer shows the message permanently there. Thank you already in advance.