Truck is primarily used for hauling 5th wheel trailer, a 16,000 pound and recently a 12,000 pound. With V-10 gas engine it takes the hills better than any commerical tractor trailers. With anti-slip differential I have never been stuck where I needed a tow. Fuel economy with trailer is poor, at my normal cruising speed of 62 mph, about 7 mpg.
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