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Old 08-23-2010, 08:42 AM   #56 (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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Running at 210* won't hurt any modern engine. Use a good oil (figuring oil runs 10 - 20* hotter than coolant temp), and you'll be fine. Most good quality oils are fine up to 240 - 250* oil temp, and many good synthetics are fine at 280+.
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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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