well it sounds like you guys dont trust the dealers very much to do your maintenance. For me I have neither the time or the knowhow to do that kind of stuff. In my opinion nobody knows the vehicle better than the dealer as that is all they do. Some of you mentioned excessive mileage after you got it back. Consider this, what is the best way to find if something is wrong with your vehicle other than plugging it into a computer? The service department probably took your vehicle down the highway to listen for any squeeks, rattles, clicking, ect. to see if there was any problems. After reading your responses, ill probably just tell the dealer that I tow, and drive in the desert, which I do, and they will service accordingly. Ill probably just tell them to put sythetic engine oil in just to keep it simple. probably give them 5w30 mobil 1 truck and suv. How many quarts of this will the dealer need?