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Old 08-04-2010, 10:43 AM   #21 (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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105,340 miles on the Jeep. It had 99,820 on it when I bought it at the end of January. The gas mileage may suck, but I love it anyway!

As far as driving gently vs hard, being hard on an engine doesn't actually shorten its lifespan, and by running it hard (even if it's just an occasional Italian tuneup), you keep the rings seated well, and it carbons up less. That is, assuming it's well maintained and in good mechanical condition. Hard running can shorten a tranny's life a bit though.

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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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