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 TJ Diff Fluid Question

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JK4AER
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JK4AER


Number of posts : 292
Age : 42
Location : San Antonio, TX
Rig : '08 Black JKU Rubi
specs. : Loaded with two carseats!!!
Registration date : 2009-11-01

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PostSubject: TJ Diff Fluid Question   TJ Diff Fluid Question Icon_minitimeTue 21 Dec 2010, 9:03 pm

MY Dad is going to change his diff fluid, anyone know what the preferred fluid and weight is? For the JK, I used Royal Purple 75W90. Also, anyone know how much to add? For the JK I used 3 quarts (2 in front, 1 in back I think). I thought I'd ask here before searching the web...

Thanks in advance,
Art
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lonestar rubi
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lonestar rubi


Number of posts : 1202
Age : 53
Location : san antionio
Rig : 2007 JK unlimited Rubicon
specs. : It's over there}
Registration date : 2010-06-21

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PostSubject: Re: TJ Diff Fluid Question   TJ Diff Fluid Question Icon_minitimeTue 21 Dec 2010, 9:20 pm

Royal purple will pretty much cover it unless you are worried about extended warranty then you have to go with a "factory" approved fluid upyours For The factory
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r_unda
Seasoned Vet
Seasoned Vet
r_unda


Number of posts : 794
Age : 40
Location : Corpus Christi, TX
Rig : 1998 Jeep Wrangler
specs. : 2.5L-4 Cyl., 33x10.5 BFG's Mud tires, 2.5 in. lift springs, 1.25 in. BL, 1 in. MML, 4.88 Gears, Front Powertrax No-Slip, Rear E-Locker, Chromoly axle shafts, SYE, Tera Low & 2Low, UCF Tummy Tuck, etc
Registration date : 2010-03-12

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PostSubject: Re: TJ Diff Fluid Question   TJ Diff Fluid Question Icon_minitimeWed 22 Dec 2010, 9:31 am

75W-90 works, I use it.
Recommended by Jeep: 80W-90 all around or synthetic 75W-140 in the rear for trailer tow.

Dana 30
2.5 pints = 1.25 quarts

Dana 35
3.50 pints = 1.75 quarts
Trac-Lok differentials require 4 oz of friction modifier

Dana 44:
4.0 pints = 2 quarts
Trac-Lok differentials require 4 oz of friction modifier
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JK4AER
Poster child
Poster child
JK4AER


Number of posts : 292
Age : 42
Location : San Antonio, TX
Rig : '08 Black JKU Rubi
specs. : Loaded with two carseats!!!
Registration date : 2009-11-01

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PostSubject: Re: TJ Diff Fluid Question   TJ Diff Fluid Question Icon_minitimeWed 22 Dec 2010, 2:25 pm

r_unda wrote:
75W-90 works, I use it.
Recommended by Jeep: 80W-90 all around or synthetic 75W-140 in the rear for trailer tow.

Dana 30
2.5 pints = 1.25 quarts

Dana 35
3.50 pints = 1.75 quarts
Trac-Lok differentials require 4 oz of friction modifier

Dana 44:
4.0 pints = 2 quarts
Trac-Lok differentials require 4 oz of friction modifier
Thanks for the info. He has a Rubi (Dana 44) but with aftermarket diff covers (don't remember what brand), so I guess the capacity could be off some. Also, I thought the Royal Purple synthetic includes the modifier needed??
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lonestar rubi
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lonestar rubi


Number of posts : 1202
Age : 53
Location : san antionio
Rig : 2007 JK unlimited Rubicon
specs. : It's over there}
Registration date : 2010-06-21

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PostSubject: Re: TJ Diff Fluid Question   TJ Diff Fluid Question Icon_minitimeWed 22 Dec 2010, 6:13 pm

Yes it does, that's why I said royal purple would cover it just fill it up until the drips from the fill hole. Then your good.
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JK4AER
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Poster child
JK4AER


Number of posts : 292
Age : 42
Location : San Antonio, TX
Rig : '08 Black JKU Rubi
specs. : Loaded with two carseats!!!
Registration date : 2009-11-01

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PostSubject: Re: TJ Diff Fluid Question   TJ Diff Fluid Question Icon_minitimeWed 22 Dec 2010, 10:31 pm

lonestar rubi wrote:
Yes it does, that's why I said royal purple would cover it just fill it up until the drips from the fill hole. Then your good.
That's what I thought...just checking. Thanks!
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Maverick1701
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Maverick1701


Number of posts : 910
Age : 37
Location : Memphis, TX
Rig : 1968 Kaiser Jeep M35A2 6x6
specs. : ITS BIG!!!!!
Registration date : 2009-02-11

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PostSubject: Re: TJ Diff Fluid Question   TJ Diff Fluid Question Icon_minitimeThu 23 Dec 2010, 6:37 pm

3quarts overall?!?!?!? that must be nice

the deuce takes 2.5 quarts per axle...woohoo!
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potlickinpirate
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potlickinpirate


Number of posts : 898
Age : 55
Location : La Vernia Tx
Rig : 73 cj5
specs. : lined the whole thing
Registration date : 2009-09-04

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PostSubject: Re: TJ Diff Fluid Question   TJ Diff Fluid Question Icon_minitimeThu 23 Dec 2010, 9:09 pm

Are you sure Mav.? The trucks/cranes at work take 5 gal. per axle
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lonestar rubi
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lonestar rubi


Number of posts : 1202
Age : 53
Location : san antionio
Rig : 2007 JK unlimited Rubicon
specs. : It's over there}
Registration date : 2010-06-21

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PostSubject: Re: TJ Diff Fluid Question   TJ Diff Fluid Question Icon_minitimeThu 23 Dec 2010, 9:43 pm

I think he's thinking 2 1/2gallons. Rocks are big axels


Last edited by lonestar rubi on Thu 23 Dec 2010, 9:45 pm; edited 1 time in total
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lonestar rubi
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lonestar rubi


Number of posts : 1202
Age : 53
Location : san antionio
Rig : 2007 JK unlimited Rubicon
specs. : It's over there}
Registration date : 2010-06-21

TJ Diff Fluid Question Empty
PostSubject: Re: TJ Diff Fluid Question   TJ Diff Fluid Question Icon_minitimeThu 23 Dec 2010, 9:43 pm

I think he's thinking 2 1/2gallons. Rocks are big axels
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