gear oil?

Tech topics for MJ, XJ, KJ and KK models (SUV and Pick-Up) manufactured from 1984 to Present.
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jjstasen
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gear oil?

Postby jjstasen » Thu Jan 26, 2012 7:16 pm

I've read a bunch of different fluid types to use in my diff.

I think i have boiled it down to two weights,

what do you guys think?

HP44, 5.13 gears, ARB locker.

80W-90 OR 75W-90.

Since i am asking, does anyone have a brand preference?
99 XJ classic, 3 link front, 4 link rear, 35''s SOLD
99 XJ sport, 3" lift, 31's SOLD
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dilleywhopper
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Re: gear oil?

Postby dilleywhopper » Thu Jan 26, 2012 7:21 pm

Since our hobby is not conducive to our stuff lasting 200,000 miles anyway, I dont think the specific weight or brand really matters. Buy the cheap shit.
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jjstasen
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Re: gear oil?

Postby jjstasen » Thu Jan 26, 2012 8:24 pm

Sounds good to me.

With that new found knowledge,

I bet I can mix up the miscellaneous bottles of brake fluid, tranny fluid, motor oil, coolant and windshield washer fluid, that I have laying around and come up with something that may work. :twisted:

Anyone else have an opinion?
99 XJ classic, 3 link front, 4 link rear, 35''s SOLD
99 XJ sport, 3" lift, 31's SOLD
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Re: gear oil?

Postby OKRenegade » Thu Jan 26, 2012 10:44 pm

I use the heavier stuff(80W) just because I think the thicker oil will be better for my older diffs, however I would feel comfortable and confident with either.
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Re: gear oil?

Postby fatty » Fri Jan 27, 2012 6:01 am

75-90 royal purple for me.
2004 Columbia Edition TJ with 4" lift, Metal Cloak fenders, TF belly up, Superwinch 9grand, 37 PBR's, RJ 60 w/ discs, PR 44 5.13's, Atlas 4.3, ARB front/rear. Sarcastic Driver! Silver Jeep Club Member 1
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Re: gear oil?

Postby desertratt » Fri Jan 27, 2012 7:09 am

With all the water crossings we do at Disney... I just use the cheap stuff. All the standard oils are basically the same, unless you get the special stuff like royal purple. My opinion...
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gear oil?

Postby btrflz7463 » Fri Jan 27, 2012 7:36 am

Yea scott, you don't want to be replacing royal purple when you take your jeep swimming! Lol I would love to use royal purple, but I have to change mine too often too. I just use whatever we sell at the shop. :)
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Re: gear oil?

Postby jjstasen » Fri Jan 27, 2012 8:59 am

Cheap 75-90
99 XJ classic, 3 link front, 4 link rear, 35''s SOLD
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Re: gear oil?

Postby ghostrider » Mon Oct 06, 2014 1:13 pm

Have you consulted the owners manual or an internet search? You can call the "Express Quick Lube" on S. Shields Blvd and I-240 Service Road. They have service my vehicles for many years. Anyway, I'm sure they will be willing to tell you what the manufacturer recommends. They did everything on mine.

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