read thru this:
http://66.236.61.177/showthread.php?t=367300
the gist is that you need a certain level of Zn and Phosporus - not all Mobil One oils have an adequate amount, but some do.
also review this entire thread - your car is not real old but some things will need to be done, and done regardless of mileage.
http://forums.pelicanparts.com/showthread.php?postid=2955054#post2955054
Best wishes with the new car.