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Old 01-10-2013, 12:46 PM   #7 (permalink)
Sven7
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Join Date: Aug 2011
Location: Warren, MI
Posts: 2,456

Boo Radley - '65 Ford F100
90 day: 13.28 mpg (US)
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Some MPG numbers for the stock vehicle and/or the way you drive it would help because the EPA did not test 2500's or diesels. Usually automatics can put up 30% or so better fuel economy than the EPA's ratings, while manuals can get as much as you put in (I've hit 87% over EPA).

A trailer complicates things and with low MPG numbers your improvements will not be as apparent in the gas log. But I do think the way to go for you is aero (and route planning, as others suggested).

The main aero things I'd go after would be gap fillers between the truck and trailer as well as a rear-end boat tail on the trailer if you're willing to lengthen it a few feet. An air dam under the front bumper couldn't hurt either, and could be made with $20 and an hour.
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