Well you better let your grandma or mom know or who ever that they need to climb under the car to make sure that their drain plug is tight as it should and check to make sure that they put the right amount of oil in.
I think its stupid. You take the car in to a dealer for an oil change so the warranty doesnt void. Then they do something which interim made the decision that regular Joe Blows cant change their own oil because it would void the warranty.