I will try to pin my service mamnager down next Friday, I have to go back to the dealer to pick up a bra I ordered. All I can say is he had a funny grin on his face when he said I needed an oil change. I think I'm smart enough and sensitive enough to know when my car runs better. Something made a big differance. Sorry AZFIRE you have dealer problems but mine has been great. So, will let you all know what I find out. (If he talks)