Interesting, thanks for the update. Could you ask the dealer exactly what was leaking? Are they referring to the vacuum pump oring seal between the pump and upper timing chain cover?
2008 F01 - Sophistograu with Saddle Brown Leather
Night Vision, Digital TV, Heated M-Sport Steering Wheel + Paddles, Combox, 6NF Baseplate, 6NR Apps, Rear Entertainment System, Automatic Boot Close and Surround View Cameras.