I'm thinking I have a noisey injector. I have been hearing it for almost a year and it just doesn't sound like other diesels I've heard. I used Power Service fuel additive and still hear it. During an oil change at a small Dodge dealer in town they said, when I suggested they listen to it, "take it to another dealer, it might be the fueling, we're not real experienced with the diesel motors". Guess this is what I'm going to do but is it hard to get them to honor a warranty like this? I'm sure there is something going on but was it either that place or dealers in general that don't like testing for stuff unless it's not running anymore?