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The gas mileage thread.

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Old 07-27-2006, 11:52 AM
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Default The gas mileage thread.
I have a 99 6.0 4.10 gears with some headers, cold air, mild cam, and full flowmaster pipes.

I get 12.5 in town and about 14-15 on the highway. I think it should be better than that.

What do you guys get??
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Old 07-27-2006, 12:54 PM
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How tall of a tire are you running?
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Old 07-27-2006, 01:11 PM
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truck in sig......16.5 in town, 21 highway.
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Old 07-27-2006, 01:39 PM
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You need a turbo, mine helped my mileage about 1.5mpg. <--great excuse

With my new motor, cam, tuned for my old setup I still got 18mpg on the highway over the weekend.

I've got the power, my next goal is to get better mileage.
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Old 07-27-2006, 01:41 PM
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BTW that is on 20's with 285s. They are pretty wide tires, and the wheel and tire weigh 82lbs ea.
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Old 07-27-2006, 02:09 PM
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On a recent trip to Alabama (from Orlando FL) I got a solid 14mpg cruisng 75-80mph, that was even dealing with hills.
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Old 07-27-2006, 02:26 PM
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With not much, I manage 21 on the highway......think a turbo would help that even more? usually 12-14 in town, depending on how abusive I am feeling.
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Old 07-27-2006, 02:50 PM
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I doubt it will get much better than that. My dads 04 2500 CC with the 6.0 gets the same mileage.
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Old 07-27-2006, 02:58 PM
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I get about 14mpg. All in town. I am not abusive, but I don't often get passed
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Old 07-27-2006, 03:40 PM
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17 on the hiway at about 70-75
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