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Old 06-21-2010, 09:25 PM   #22 (permalink)
greenfuelbooster
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Join Date: Jun 2009
Location: VA
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Manual. Fill up full tank. Zero out Trip A mile counter. Drive from central, MD to Richmond, VA ( approx 160 miles) I-95 highway. Fill up again. Trip A miles divided by amount of gas fill up in Richmond, VA. Then do the same for trip from Richmond, VA back to central MD.