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Old 07-15-2010, 11:41 AM   #13 (permalink)
comptiger5000
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Join Date: Feb 2010
Location: CT, USA
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RaceJeep - '98 Jeep Grand Cherokee (ZJ) 5.9 Limited
90 day: 13.62 mpg (US)
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Your t-stat is probably a 195*. Unless you can bump the fan engagement up to about 210*, I wouldn't change it to a higher temp, as the fan would be on constantly.

Running it cooler with EOC so you're under 195* does keep the cooling loop small. Just let it get up to full temp every few weeks or so for at least 10 minutes of runtime to mix up all the coolant again, and it should be fine.
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Typical driving: Back in Rochester for school, driving is 60 - 70% city
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