My indicator came on yesterday that it's time for service. Mine has a pro date of 11/08 even though I bought it in 08/09. Does this system also use time as a factor? I was goint to change it around 3000 miles anyway but right now I have 2500 miles on it. I called the dealer last week but they were booked up for the next couple of Saturdays and they sent me a coupon for a free change anyway. After this one I'm going to Pennzoil Synthetic 5W-20.