My dealer quoted a third party 6 year, 60,000 mile "maintenance plan" at $595. This was for oil changes and tire rotations only. it also included a $250 coupon that would be good towards the purchase of your next vehicle from their dealership. Keep in mind the '08's have a 5000 mile service interval for severe, 7500 for standard driving, with 6 months as the max duration. Assuming 2 oil changes a year (following the every 6 months since my wife only drives 12k per year) that worked out to about $48.50 per oil change/tire rotation. My dealer usually has coupon prices that work out to around $30 for an oil change, so I took a pass on it. My guess is that plan has about $250 in profit built into it to cover the cost of the "next vehicle purchase"

In defense of maintenance plans, I did buy the 7/100 ESP for this truck.

-Mike
2000 Mercury Mountaineer V6
2008 Ford Expedition EL XLT