The Beutelschneiderei at gas stations and in the service workshops stinks to high heaven. Alas, if you have to top up times on the road, you get pulled the wool over your eyes. Now I always have a "sip" 0W-40 on board. Most importantly, if you always wanted - as we do - driving from North Germany until the middle more.
Thank MOBIL and its dealers! There are rarely more for the money.