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Old 12-03-2012, 11:35 PM   #1
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Fluids change for 2004 TJ Rubicon

Just became proud owner of a 2004 TJ Rubicon (I am sssooooo stoked ). I would like to replace ALL of the fluids, oils, lubricants, etc.

Climate conditions (in case it matters for fluid/lubricant selection):

I live in what is probably considered the high desert area (near Boise, ID) and we get about 14" precipitation/yr. Hits 100 degrees for a few days in the summer with many days above 85 degrees and often resting in the 90's. Most winter nights have a low of 20-30 degrees it might dip into the single digits a couple winter nights/yr.

Most miles driven will be city and highway driving with the every other weekend of forest service roads, light 4-wheeling, shallow sand (if any), camping, hard pack desert roads, etc.

Also,

Any special tools or precautions that I need to be aware of before beginning these fluid changes?

Any recommended articles, videos, thoughts, etc. on "How to" do these tasks? I am fairly mechanically inclined and have changed engine oil many times but have never changed differential oil, transfer case oil, etc.

Thank you for any tips or advice. It's ALWAYS appreciated!!!!

Jontay

p.s. any southern Idaho, northern Nevada, eastern Oregon Jeep clubs out here?? Or, anyone mind if a newbie tagged along on a Jeep run?

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Old 12-03-2012, 11:38 PM   #2
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btw, it's the inline 4.0 liter w air conditioning and with a 5 speed manual tranny........in case any of this makes a difference in fluid selection.

Thanks.

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Old 12-03-2012, 11:58 PM   #3
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Congrats on your new Jeep. If you didn't get an owner's manual with it, you can order one from Chrysler. Mine was $20 delivered.
5w or 10w-30 motor oil is recommended for the 4.0. My transfer case takes ATF+4. Your diffs and transmission are different than mine, so someone else will have to help you with those.
HOAT antifreeze is recommended. Have fun.
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Old 12-04-2012, 12:54 AM   #4
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This video will help with changing the differential fluid.
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Old 12-04-2012, 09:28 AM   #5
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Check out stu-offroad.com. Great site with lots of write ups and how tos
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Old 12-04-2012, 10:45 AM   #6
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Congrats on the rubicon . My only warning is on the rear differential fill plug. If you remove it be carefull when you screw it back in. If you screw it in too far it will contact a part of the locker and cause a problem. Put some rtv or pipe tape on it and don't over tighten.
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Old 12-05-2012, 02:52 PM   #7
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Originally Posted by Bgtklbx View Post
Congrats on the rubicon . My only warning is on the rear differential fill plug. If you remove it be carefull when you screw it back in. If you screw it in too far it will contact a part of the locker and cause a problem. Put some rtv or pipe tape on it and don't over tighten.
I think this literally just happened to me. Was being lazy and went to Jiffy Lube. As soon as I drove off, there was a popping sound and the Rear lock light came on. Went right back, the guy messed around with the fill plug, and pulled out a chunk of metal. As soon as he put it back on everything was fine. Not sure if there was any damage but will find out when I change the fluid this weekend...myself.

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