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Old 04-08-2012, 07:51 PM   #1
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gas milage

What kind of milage everyone getting with their 4.0.

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Old 04-08-2012, 08:27 PM   #2
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10 to 15 city. The big factor is 4wd vs 2wd. About 15 in 2wd. Mine is a 5 speed tranny.

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Old 04-08-2012, 08:28 PM   #3
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5 speed, 35" swampers, 4.88 gears..normal driving 15~
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Old 04-08-2012, 08:42 PM   #4
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20 -22 !

I drive like a granny ( speed limit )/ accelerate slow, I have 32s everything else is stock,

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Old 04-08-2012, 08:44 PM   #5
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18-19 consistently, and I also drive it like a baby. I could tell a big difference just by keeping it 5 under the speed limit. And I work with a guy that makes his own biodiesel and he told me something I will never forget, to mash the accelerator as if an egg was under it.
And 31s with an auto with 3.07 gears
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Old 04-08-2012, 08:47 PM   #6
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Everything is stock just changed my o2 censors and upgraded the air filter and I get 14-16 city and have seen 18 on the highway auto trans
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Old 04-08-2012, 10:41 PM   #7
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Just bought an 2005 LJ, 81,000 miles 4.0/6 speed, 235-75R15's. 3.73's I think. I've gotten 17 and 19 mpg on the 2 tanks I've put through it, hoping I can keep that up or get better.

Will 31's help or hurt my MPG?
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Old 04-08-2012, 11:29 PM   #8
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Originally Posted by robrat View Post
Just bought an 2005 LJ, 81,000 miles 4.0/6 speed, 235-75R15's. 3.73's I think. I've gotten 17 and 19 mpg on the 2 tanks I've put through it, hoping I can keep that up or get better.

Will 31's help or hurt my MPG?
Probably hurt. More tire to start moving..especially in town. Not going to be bad though..
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Old 04-08-2012, 11:35 PM   #9
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32's on 4" and I get roughly 15-17 on my good days. Lately here it's been 12-14 though.
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Old 04-09-2012, 09:28 AM   #10
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Quote:
Originally Posted by hellkatshockey
Everything is stock just changed my o2 censors and upgraded the air filter and I get 14-16 city and have seen 18 on the highway auto trans
What does changing the O2 sensors do? Should they be changed when Jeep moves to higher altitudes?

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