My '06 Ford 500 is telling me I need to change the oil, even tho its been only about 2,500 miles since I put in the Motorcraft 5W-20 & Motorcraft filter. However, time-wise, its been about 7 months and mostly short trips of under 2 miles to & from the train station. I plan to change it soon, but here's a counterexample to the observations that Ford uses a "dumb" mileage counter for its OLM