Rather than wait for the 2009 model year to roll around, Ford has decided to introduce two new fuel saving changes to the 2008.5 Super Duty that should improve fuel economy for the big trucks by about 1.5 mpg. That may not sound like much, but for vehicles that barely break the double-digit barrier in mpg, it's a big improvement. The changes include reducing the rear axle ratio on certain F-250 and F-350 models and extending their underbody chin spoilers by 3.93 inches. If you're a truck person,
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