I thought you were a Chevron Delo fan, not Mobil 1. Or do I have you confused with someone else on this board?
Either way, I'm glad I've never been one to take the Dealers advice when it comes to maint. schedules. I'm sure I've spent more than others during the life span of the car, but at least it made me feel good to change fluids on a lot more frequent basis!!
I wonder how this whole scenario will play out with resale values? I know I would shy away from a car that the owner went strictly by the FSS for oil changes using mineral oil.