Hello Mini Fans. I’m new here and thank you already for every answer to my topic. Apparently it can happen that the rectangular rings on the camshaft enter and damage the storage shells. Figure 1 to 3. The sharp-edged closures of the rectangle ring could be the reason for this damage image. As a result, the flow of the oil in the direction of the camshaft and an error message to the vanos. As the outlet camshaft with the lower half is located in the cylinder head dadu As a result, the cylinder head has to be replaced completely. The rectangular rings are no longer used in the shape originally made of hardened metal and today, plastic rings are used which can no longer cause any damage of this kind. Figure 4. Since there was no recall action, I would be interested to know that someone has been aware of this problem or even had similar damage. Eicht has someone’s professional knowledge 🙂 Not without reason does BMW no longer use these metal rectangle rings, right? I would also be very pleased about a PN in this context. Greetings from Berlin.