I was at the local autoshop, where the salesman swore that any car with with over 50,000 miles should use the mobil 1 exdended performance synthetic fluid. My 02 has 75k on the clock and I was wondering who has had experience with this fluid. It seems to have the same viscousity, so I don't expect it to damage anything. But I wanted some first hand knowledge or expert advice. Thanks guys!