My work truck is a 09 F-450 with 65, 000 miles on it, it's on its 4th radiator but other than that there are no real complaints. The truck is consistantly at 17, 500 lbs and goes up a 7% grade from Golden, Co to the Eisenhower tunnel on Interstate 70 (this strecth down the otherside to Silverthorne is where the truck shootouts are ran through there paces) at the speed limit, so there's plenty of power. Two guys that work with me have an 08 and a 09, one has had to have a radiator replaced the other hasn't had any issues.
I know that people don't buy heavy duty trucks for there fuel efficiency but understand that these trucks are the worse among the bunch, around a 10-11 mpg average.
