Just got back from the Dealership for my 15K mile service. I laugh at the stuff they try to sell you. I just wanted my synthetic oil change and my tire rotation.
The guy comes back telling me that I should get my rear brakes cleaned and adjusted. My tires balanced. And some "Induction cleaning" because there was carbon buildup. The price tags respectively were $45, $23, and $120. I called my uncle told him the stuff and he gave me the wisdom talk. Went back to the dealer and said, look I just want my standard maintenance, the oil change and rotation. Oh and I'm gonna need it in writing that my car has carbon buildup so I can go claim warranty from Toyota and get a new engine. He responds oh no no, this is just a preventive service and has to do with the intake not with the engine. I said OK, just give me my standard maintenance thanks. These guys really crack me up. Trying to sell me all that crap. I might just go to my trusted mechanic and have him take a look at it. Make sure everything is tip top for holiday travels.
Cheers!