Would/Do you trust maint pln oil changes?
Generally, I do not. The people doing the oil changes are often at the bottom of the totem pole. If it were a good dealer I trusted, I could probably live with it, assuming they used a good oil and the OEM filter.
When I got my G, the Chrysler dealer from whom I bought it offered a lifetime warranty on the engine if they got to do all the oil changes. Considering that Chrysler at the time didn't have a filter cross reference (they do now, with the Fiat thing), they farmed out the initial oil change to the Canadian Tire across the street, who conveniently overfilled the thing by over a litre and used the cheapest filter in the land of Canadian Tire. So, I declined this lifetime warranty.