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Unread 01-05-2014, 07:16 PM   #31
brunolambert
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2008 KK Liberty 
 
Join Date: Feb 2013
Location: Sherbrooke, Qc
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Quote:
Originally Posted by jetsown08 View Post
I get consistently 12 mpg, sometimes down to even 10.5/11 mpg doing majority short distance town driving. It's pretty cold over here right now, so in the summer I get closer to 13 mpg. Highway driving I actually get about 19-20mpg.

So much for the 16/22 figures Jeep advertises... I'd kill to get 16 mpg in the city!
that sounds right for my situation too

except that I probably drive too fast on the highway and get 18.

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Unread 01-05-2014, 09:18 PM   #32
Poncherello
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Location: Paterson, New Jersey
Posts: 1,009
Well since the beginning of the new year at each fill up my average was
17.11, 17.21, 14.23 - I was using 4wd quite a bit
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Unread 01-06-2014, 03:14 AM   #33
Bmxer524
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130 miles on the tank....I'm about to hit the mark for 1/8 left. I think I'm doing quite well...

On a side note, I'm at about 32k miles so I know I need plugs. I have a feeling that's killing my mileage...
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Unread 01-06-2014, 06:43 AM   #34
rescue575
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Quote:
Originally Posted by Bmxer524
130 miles on the tank....I'm about to hit the mark for 1/8 left. I think I'm doing quite well...

On a side note, I'm at about 32k miles so I know I need plugs. I have a feeling that's killing my mileage...
I guess that could be my issue a but too. Just hit 40k on stock plugs.

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2 KC Slimlite[RIGHT] 130 Watt Long Range on JK Bar
TMS Aluminum Roof Rack Cross Bars
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Unread 01-06-2014, 07:08 AM   #35
LKWJEEPER
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Quote:
Originally Posted by rescue575 View Post
I guess that could be my issue a but too. Just hit 40k on stock plugs.

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You'll be amazed how much better your KK will run if you change out the plugs..
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Unread 01-06-2014, 07:17 AM   #36
rescue575
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Quote:
Originally Posted by LKWJEEPER

You'll be amazed how much better your KK will run if you change out the plugs..
Now is that just the normal lifespan of plugs on the Libby or is that just the stock plugs?

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2011 Liberty Sport
2 KC Slimlite[RIGHT] 130 Watt Long Range on JK Bar
TMS Aluminum Roof Rack Cross Bars
Cobra 75, Firestik Door Jam Mount, HD Spring, 2Ft Firestik
Dunlop Fierce Attitude M/T
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Unread 01-06-2014, 08:13 AM   #37
LKWJEEPER
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Quote:
Originally Posted by rescue575 View Post
Now is that just the normal lifespan of plugs on the Libby or is that just the stock plugs?

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The Liberty uses copper plugs. So they need to be changed every 30k miles. Don't use a different plug to not change as frequent cause that could lead to issues.

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Unread 01-06-2014, 08:54 AM   #38
rescue575
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Got ya. Guess its time then. Lol

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2011 Liberty Sport
2 KC Slimlite[RIGHT] 130 Watt Long Range on JK Bar
TMS Aluminum Roof Rack Cross Bars
Cobra 75, Firestik Door Jam Mount, HD Spring, 2Ft Firestik
Dunlop Fierce Attitude M/T
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Unread 01-06-2014, 07:06 PM   #39
Bmxer524
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Just filled up, 8.6mpg. And yes, I did correct for the larger tires lol. We had a snow storm this week, and I know plugs need changing. I barely used 4wd. I stay in rwd unless I'm starting on a hill or need to take of quickly(which only happened 2 or 3 times).
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Unread 01-06-2014, 07:11 PM   #40
Gageraid
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Quote:
Originally Posted by Bmxer524 View Post
130 miles on the tank....I'm about to hit the mark for 1/8 left. I think I'm doing quite well...

On a side note, I'm at about 32k miles so I know I need plugs. I have a feeling that's killing my mileage...
Change those plugs!
I usually rant how easy it is to change plugs, but apparently on the "newer" KK's it's not as easy as the 2008-2010.
Only place I could find the NGK plugs was at the dealer FYI.
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Unread 01-06-2014, 07:21 PM   #41
lfhoward
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Quote:
Originally Posted by tommudd View Post
By the way ask lfhoward what my mileage was yesterday running to town and back when we needed parts for his
Have to report Tom was getting 23.5 on a straight flat county road going 50 Man, I need to regear. I get about 15-17 mpg under those conditions. Tom is rocking 265/75/16 Duratracs with 4.10's, whereas I have 245/75/16 Duratracs with 3.73's. I usually press the Tow/Haul button to lock out overdrive at those speeds because it can't stay in 4th gear if there is any kind of topography. I could go to 4.10's or even 4.56's with the KK. 4.56's would probably make it feel like a Hemi, but mileage would probably suffer. I don't know if anyone with a KK has gone to 4.56 gears yet.
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Unread 01-06-2014, 08:51 PM   #42
kxeddiexp
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Quote:
Originally Posted by Gageraid View Post

Change those plugs!
I usually rant how easy it is to change plugs, but apparently on the "newer" KK's it's not as easy as the 2008-2010.
Only place I could find the NGK plugs was at the dealer FYI.
Anyone know how to change plugs on 2012 KK? Step by step pics?
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Unread 01-07-2014, 01:43 AM   #43
Bmxer524
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Quote:
Originally Posted by lfhoward View Post
Have to report Tom was getting 23.5 on a straight flat county road going 50 Man, I need to regear. I get about 15-17 mpg under those conditions. Tom is rocking 265/75/16 Duratracs with 4.10's, whereas I have 245/75/16 Duratracs with 3.73's. I usually press the Tow/Haul button to lock out overdrive at those speeds because it can't stay in 4th gear if there is any kind of topography. I could go to 4.10's or even 4.56's with the KK. 4.56's would probably make it feel like a Hemi, but mileage would probably suffer. I don't know if anyone with a KK has gone to 4.56 gears yet.
Did you meet John(jeepin_it_reel) when you were on the island? He has 4.56 gears, and he's spinning 265/75-16s.

And Gage, yeah I know I have to. It's just really cold lately and I don't wanna leave the house unless I have to lol
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Unread 01-07-2014, 05:43 AM   #44
rescue575
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Quote:
Originally Posted by lfhoward

Have to report Tom was getting 23.5 on a straight flat county road going 50 Man, I need to regear. I get about 15-17 mpg under those conditions. Tom is rocking 265/75/16 Duratracs with 4.10's, whereas I have 245/75/16 Duratracs with 3.73's. I usually press the Tow/Haul button to lock out overdrive at those speeds because it can't stay in 4th gear if there is any kind of topography. I could go to 4.10's or even 4.56's with the KK. 4.56's would probably make it feel like a Hemi, but mileage would probably suffer. I don't know if anyone with a KK has gone to 4.56 gears yet.
Let me ask this, does the KJ get better mileage normally due to its slightly more aerodynamic body compared to the Refrigerator box we drive?

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2011 Liberty Sport
2 KC Slimlite[RIGHT] 130 Watt Long Range on JK Bar
TMS Aluminum Roof Rack Cross Bars
Cobra 75, Firestik Door Jam Mount, HD Spring, 2Ft Firestik
Dunlop Fierce Attitude M/T
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Unread 01-07-2014, 11:07 AM   #45
Bmxer524
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Quote:
Originally Posted by rescue575 View Post
Let me ask this, does the KJ get better mileage normally due to its slightly more aerodynamic body compared to the Refrigerator box we drive?

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From what I've seen on the forums, yes. Usually it's about 1mpg better or so. It's not much. I'd say for the most part we're all even. I've seen some KJs get a lot worse mileage compared to a KK.
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