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Old 03-06-2010, 10:47 PM   #9 (permalink)
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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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As mechman said, diesel isn't terribly flammable. At the temperatures it would reach in an engine, it would likely ignite with the spark. However, I doubt it would burn well or completely, so it wouldn't be overly efficient and probably very dirty.
Call me crazy, but I actually try for mpg with this Jeep:

Typical driving: Back in Rochester for school, driving is 60 - 70% city
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