Like Larry says, change it yourself. I would just read the fine print of my warranty to make sure that there is no way doing something like could void my warranty (although I can't think of any reason it would - it wouldn't surprise me if your dealer could come up with a few). I change my oil about twice as often as is recommended. I don't let my computer tell me when to eat, when to sleep, when to shower, and I wouldn't let it tell me when to change my oil. Does the dealer do your oil changes for free on new cars? That would be the only reason I could think of why they wouldn't change it. They charge enough for an oil change you'd think they want to do it.