Tx berry---- I am not completely sold on the Amsoil yet. Not that it isnt a good oil----right, lets not get that one going . Out of all the old clunkers I have made last for years, I have never gotten rid of one because of worn out engines, its the other stuff that wears you out trying to keep working. I have also never been a religous oil changer, I do watch the oil, but I would be embarassed to tell how long some of mine have gone. None of my later models get oil at 3k or even 5k. The 07 will probably stay on synthetic (MC) and go for 7500.