I brought my 2015 Tundra in for it 12 month service, which is covered under the Toyota Customer Care program. They changed the oil and filled my windshield wiper fluid reservoir with water. Not the 50/50 fluid/water ratio as recommended in the service manual. When I asked why, they said as a dealer they can put whatever they want in there, and the cost difference is only about a buck, making it sound like no big deal. If they choose to take short cuts on other service as well, say using regular oil in place of synthetic, they save even more. Which in turn, saves them more $$. And if they are doing this to everyone that goes there that's even more $$, much more. I'm not sure what these shortcuts do to the longevity of the vehicle. I'm not bringing my car to them anylonger. Good luck to those of you who do. I have several email corespondents with them and Toyota corporate to back my dis-satisfaction. As a customer I don't care what it costs, they are supposed to follow the owners maintenance manual.