1999 power stroke 7.3l diesel mpg

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clarks@egl.net - 14 Feb 2007 00:26 GMT

I am looking to buy a 1999 F350 2wd crew cab long box with the 7.3l
diesel and drive expedited freight hauling a dual axle trailer. The
trailers max load could be only 5000 lbs. I am considering a 3.42 gear
to improve mpg. Can any one tell me their mpg experience?

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Spdloader - 14 Feb 2007 00:49 GMT

'99 F350 Dually SuperCrew 4X4 7.3L Auto Trans. 4.11 rear gears
It has 108,000 miles.

Stock: 17hwy, 12 towing 32ft travel trailer.

Hypertech Stage III, 21hwy, 13.5 towing.

Spdloader

>I am looking to buy a 1999 F350 2wd crew cab long box with the 7.3l
> diesel and drive expedited freight hauling a dual axle trailer. The
> trailers max load could be only 5000 lbs. I am considering a 3.42 gear
> to improve mpg. Can any one tell me their mpg experience?

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Chris Hill - 14 Feb 2007 15:57 GMT

>I am looking to buy a 1999 F350 2wd crew cab long box with the 7.3l
>diesel and drive expedited freight hauling a dual axle trailer. The
>trailers max load could be only 5000 lbs. I am considering a 3.42 gear
>to improve mpg. Can any one tell me their mpg experience?

The standard gears are 3.73 and 4.10. I wouldn't think of changing to
a taller gear, you'll spend more time out of your overdrive if it is
an automatic, so you wouldn't gain anything. I'd guess you'll get
10-11mpg depending on how tall the trailer is.

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