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post #1 of 5 Old 12-21-2010, 09:50 AM Thread Starter
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2008 KK Liberty 
Join Date: Sep 2009
Location: San Carlos, CA
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Spark Plugs

What brand of spark plugs are good to use? How often should they be changed? I have the NGK iridium IX in my liberty currently and i'm coming up on 30k miles.

UPDATE: I have an 08 Libby

Last edited by KISSlover101; 12-21-2010 at 12:53 PM.
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post #2 of 5 Old 12-21-2010, 12:03 PM
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1986 MJ Comanche 
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regular champion plugs are perfect for a Jeep. nothing fancy or NASCAR quality, leave that to crappy Hummers

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post #3 of 5 Old 12-21-2010, 01:20 PM
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2008 KK Liberty 
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Location: Stoneham, Massachusetts
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The spark plugs are NGK ZFR6F-11G 6987. NGK (6987) ZFR6F-11G V-Power Spark Plug, Pack of 1: Automotive . These are what i used, i only stick with OEM on the spark plugs, its not worth buying the expensive ones.

2008 KK Liberty
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post #4 of 5 Old 12-21-2010, 01:29 PM
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2008 KK Liberty 
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The stock NGK are what I use. stay way from ac delco

Don't forget to service the transmission and Differential.
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2008 Sport Liberty
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post #5 of 5 Old 12-27-2010, 08:23 AM
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2015 KL Cherokee 
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Location: Ashburn
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I also use the stock NGK plugs. I've changed them twice already at 30K and 60K without any problems and the all the plugs have worked great as far as I can tell. No need to pay extra for anything else.
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