I've been using synthetic oil for my past few oil changes, and I usually buy my own jug of Mobil 1 before going and getting the oil change at Wilkie Subaru here in Philadelphia.
This time, I was told by the customer representative in the service department that the department is holding the position that the WRX should not use synthetic oil. They said that they've been having reports of engine damage in WRX's using synthetic, and it had something to do with the engine seals being damaged (don't know much about this sort of thing. I mean, I don't even change my own oil). They said that they're having low milage cars with engine damage. I told them to use the synthetic I brought and that I'd look more into other sources regarding this matter for my next change.
Do you guys know anything about this? I don't see why this would be a problem, but then, I really don't know about engine maintenance, so I wanted to ask the experts (read: not the dealership).
Any information would be appreciated