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Old 08-11-2010, 02:33 PM   #3 (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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EOC with the tranny spinning in this thing is bad for it, as with most autos. No fluid circulation unless the engine is running, so I'd kill the tranny bearings after a while. By putting the t-case in neutral, I do get slightly less rolling resistance, as there's less stuff spinning, but the big benefit is that the tranny doesn't spin.

Unfortunately, I can't do any more EOC testing as I drive around at the moment, as I had to park the Jeep for a couple days last night when the water pump started leaking. Should have it back on the road for the weekend, gotta wait for parts.
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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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