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Old 03-18-2010, 02:02 PM   #6 (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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For most cars, the safest bet is an O2 sensor from the dealer. I know Jeeps in particular do weird stuff with aftermarket sensors.
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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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