Originally posted by TurboS10
What really ticked me off is when I went in to talk to them they said my filter, exhaust and 18 inch wheels make it impossible for my truck to get the right mileage and all of those will make it go down. Bull$$&*!!!! Filter and exhaust got me 1MPG better on my old truck on the highway. The 18 wheels and tires are aluminim lower profile and are lighter than stock. Roll out is within a few inches of the factory tires, so that is not the problem.
When they say something like that you have to stick it to them.
Put the ball in their court, ask them to inspect the truck, do whatever tests they need to do. Ask them point blank "is this truck capable of getting the advertised mileage, can we agree that it is in proper care?"
Show them your service records if you have to.
"so you're saying if I put a stock set of tires and filter on this truck, I'll get the MPG that was advertised when I bought it?"
Make them responsible for their statements, and hold them to it.