Maintenance on a 2007 KJ - JeepForum.com

 
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post #1 of 3 Old 06-05-2014, 10:14 PM Thread Starter
psmask01
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2006 TJ Wrangler 
 
Join Date: Apr 2014
Location: louisville
Posts: 68
Hey everyone, i have just a few basic dumb questions. All apologies I am a WK owner myself. Im fixing to do some across the board preventative maintenance on my girlfriends 07 KJ this weekend. I plan to drain/change Tcase and front rear diff fluids, new plugs, air filter, replace pcv valve, and planned on at least topping off the tranny fluid. My questions are
1) atf+4 good for the tcase? mine takes the mopar mv245/247/249
2) I was gonna use 75w-140 for both diff's (same as my WK) she may tow 1500-2000lbs 3-4x a year. will that be ok?
3) any plug recommendations? was just going to go autolite platinums
4) after reading up on the 2007 models, apparently PCV valve is not where manual states (different than 02-06) and dealer/auto parts store try to sell the wrong part. Do i just tell them i need one for a KK?
5) whats the deal with the no tranny dipstick?? any cheater ways to check?
6) any overall tips or things to look out for? this will be my first time ever touching a liberty!
Thanks guys sorry as I know some of these questions have been answered on here but seem to be conflicting. BTW it is an 07 with 88k miles 4x4 (selectrac i believe)

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post #2 of 3 Old 06-06-2014, 05:05 AM
tjkj2002
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2002 KJ Liberty 
 
Join Date: Dec 2009
Location: Colorado
Posts: 8,386
1) atf+4 good for the tcase? mine takes the mopar mv245/247/249 ---Yes ATF+4
2) I was gonna use 75w-140 for both diff's (same as my WK) she may tow 1500-2000lbs 3-4x a year. will that be ok? 80w-90 or 85w-140 non-syn is better for your diffs
3) any plug recommendations? was just going to go autolite platinums --Only use copper core plugs,same plugs required by your 4.7
4) after reading up on the 2007 models, apparently PCV valve is not where manual states (different than 02-06) and dealer/auto parts store try to sell the wrong part. Do i just tell them i need one for a KK?--That should work
5) whats the deal with the no tranny dipstick?? any cheater ways to check? --Yes but requires a high end scanner to read the trans temp,a chart,and the special dipstick to correctly read the level

'02 Liberty sitting on 35" tires,HP44,RockJock60,and AtlasII t-case
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post #3 of 3 Old 06-06-2014, 11:36 AM Thread Starter
psmask01
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2006 TJ Wrangler 
 
Join Date: Apr 2014
Location: louisville
Posts: 68
Ok great thanks. Im glad I didnt go spend the money for that gear oil!

Last edited by psmask01; 06-06-2014 at 08:56 PM.
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