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F350, ext cab, 3.73 rear, 4wd, 7.3 diesel, 107k miles
Very impressive mileage Big Dave. I was wondering if you had done any modifications under the hood. I am considering getting a programmable chip for my truck. Immediately after buying it used last May I was able to get 21mpg consistently on the open road using cruise control and 23 w/out using cruise control driving the same 200 mile route.
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