Everything I own gets rotella. Even when I was building VWs they got rotella. Engines with flat tappetts really like the zinc that is still in the stuff. Last time I had my oil changed at the dealership in my 2010 diesel, they charged me for synthetic but put conventional in it. After that, I decided never again. If I can do it myself I will. Plus, I can change the oil in my truck for 45 bucks whereas the dealer charges 130.