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Stock JK Tech Bulletin board forum regarding issues with OE (original equipment) components of the Jeep JK Wrangler (Rubicon, Sahara, Unlimited and X) such as factory suspension parts, engine, transmission, body parts, interior fixtures and the on-board computer.
View Poll Results: What's your odometer reading? Problems??
25,000
19.26%
50,000
24.98%
75,000
20.40%
100,000
14.68%
125,000
8.10%
150,000
7.44%
200,000
3.05%
250,000
1.33%
300,000
0.38%
350,000+ (please list if higher)
0.38%
Voters: 1049. You may not vote on this poll

This is a poll for the JK 3.8L V6 and it's engine longevity. Engine problems so far?

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Old 11-02-2011 | 06:27 PM
  #21  
Friday2322's Avatar
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Joined: Mar 2011
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From: Wichita, KS
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22,000 miles and no problems so far, other than pinging at high rpm (trying to resolve it).
Old 11-02-2011 | 06:52 PM
  #22  
LTLBSTRD's Avatar
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Joined: Apr 2011
Posts: 36
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From: Mississauga, Ont
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'08 63000km= no problems
Old 11-02-2011 | 10:12 PM
  #23  
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Joined: Mar 2009
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From: Clovis, NM
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2009 unlimited 16000 No issues / no oil burning (fingers crossed)

2010 x 65000 ( baby sitting for deployeed friend) put about 3500 miles on it for him ( his request) 2 oil changes (1 when i took it from him because the oil was black) and since I change mine at about 3000-4000 No issues.
Old 11-02-2011 | 11:30 PM
  #24  
smartJK's Avatar
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Joined: May 2008
Posts: 164
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From: San Antonio, Tx
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07 jk 2dr. 69k. small oil consumption. other than that. its good
Old 11-03-2011 | 04:25 AM
  #25  
Vincent's Avatar
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Joined: Mar 2009
Posts: 577
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From: 46514
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'09 Unlimited, 56,000mi., little oil consumption which is somewhat a concern, uses 5w30 Mobil 1. No engine issues thus far although the clutch is starting to feel a little wimpy recently.
Old 11-03-2011 | 04:34 AM
  #26  
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Joined: Sep 2011
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From: MD
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2010 Just under 40k drive around 100 miles a day, change oil on the dot when needed, Running 5w30 with 87oct with one tank a month with 91 in it for sh!tandGiggles

No issues ....so far..not burning oil or anything....
Old 11-03-2011 | 06:11 AM
  #27  
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jdk
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Joined: Jul 2010
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From: Rockwall Texas
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07 JKUR 95700 started burning oil at 50,000 , started jumping out of gear at 30,000 replaced waterpump at 85,000.
Old 11-03-2011 | 06:22 AM
  #28  
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Joined: Jul 2009
Posts: 590
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From: State College, PA
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A little over 26K on my 08 JKU with the 6-speed. No issues so far (knock on wood). Planning to change all of the fluids (transmission, transfer case, differentials, etc.) at 30K so I should get a good look at how things are wearing at that point. Engine doesn't burn appreciable oil. If I run 5W-20 it comes up less than 1 quart shy at 3K. Even less is burned when I run 5W-30.
Old 11-03-2011 | 06:42 AM
  #29  
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Joined: Jul 2011
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From: Corpus Christi,TX
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08 jku bout 42k no issues
Old 11-03-2011 | 07:20 AM
  #30  
HKjk's Avatar
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Joined: May 2009
Posts: 9
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From: Presque Isle, ME
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08 unlimited
front crank seal, oil pan gasket at 58000
eats 2qts per 3000 miles still
trans cooler lines blowing everywhere at about 50000 along with power steer hose/bottle


ball joints at 55000

i've had nothing but jeeps since i started driving (my fourth),this one gets compliments about how it looks and what not, however mechanically and engine power wise i am completly dissapointed



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