Go with the 8.1 It will walk all over the 6.0 and the miles per gallon will be every bit as good. I own a dually with 8.1. I've seen fuel mileage all the way from a low of 8mpg when the truck was new and hauling a tractor over the Rockies, up to 16mpg with 52,000 miles on the odometer and using full synthetic motor oil.
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Today's Featured Article - The Nuts and Bolts of Fasteners - Part 2 - by Curtis Von Fange. In our previous article we discussed capscrews, bolts, and nuts along with their relative hardness and thread sizes. In this segment we will finish up on our fasteners and then work with ways to keep them from loosening up in the field. Capscrews, bolts and nuts are not the only means of holding two parts together. When dealing with thinner metals like sheet tin, a long bolt and
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