Bought two 2014 TDI cars, one came with a maintenance plan from the VW dealer. That is all fine and good, but it got serviced and got Kendall Euro 5w40, which from my research was an A3/B4 oil. This engine calls for 5W30 low saps oil that meets VW 507 specs. The oil they used meets VW 505 specs which is pretty much the opposite formulation of what it requires. You would think a VW dealer would know better. Do I just let them use this oil in it? I don't think it will hurt the engine but I don't imagine the DPF will be too happy with it. On the other hand, the emissions system has plenty of warranty left and any repairs from it would be on their dime. They told me it meets euro standards so it is fine, I am not sure I agree. Opinions?