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Old 10-11-2008, 01:51 PM   #11 (permalink)
aerohead
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hills

In the ecomodding sticky,on page two,I've listed the effects of road grade on mpg.Those hills you're driving could be costing you 55% of your mileage.42-mpg may be "fantastic" mpg,depending on your driving environment.Check the numbers and compare to your roads.

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