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Old 03-01-2010, 08:26 PM   #15 (permalink)
comptiger5000
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Join Date: Feb 2010
Location: CT, USA
Posts: 544

RaceJeep - '98 Jeep Grand Cherokee (ZJ) 5.9 Limited
90 day: 13.62 mpg (US)
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If you know GPH and MPH, you can compute MPG. They aren't overly cheap, about $150 for an analog gauge type, more for digital display. For a carb, however ,there isn't much other choice.
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