Switched my 240D over to Mobil Delvac 1 at 143,000 miles and it just purred like a kitten.
Changed again at 147,000 and used Mobil 1 15W-50 for the long hot summer, I'm changing early to get more of of the PO non sysnthetic oil out of the engine. I'll change it again in late September then switch back to Delvac 1 or it's twin Mobil 1 Truck & SUV oil.