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Unread 02-20-2005, 02:05 PM   #1
merdas
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Differential fluid

What type of diff. fluid for brand new D44 with ARB, just finished the swap and need to fill her up ?
Thanks

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97 TJ
4" Full Traction long arm lift
1" MML
1" BL
Procomp 15x8
35" BFG MT
Front D30 with ARB
Rear D44 with ARB
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Unread 02-20-2005, 04:52 PM   #2
Jerry Bransford
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Your ARB Air Locker is really not fussy about the exact gear lube it gets. Any GL-5 or GL-6 is fine, with GL-6 being the newer improved gearlube that has slightly better specs/protection than GL-5 does. Use a lower viscosity GL-5 or GL-6 in cooler climates, a higher viscosity if you wheel in warmer climates or tow.
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Unread 02-20-2005, 08:05 PM   #3
merdas
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Quote:
Originally Posted by Jerry Bransford
Your ARB Air Locker is really not fussy about the exact gear lube it gets. Any GL-5 or GL-6 is fine, with GL-6 being the newer improved gearlube that has slightly better specs/protection than GL-5 does. Use a lower viscosity GL-5 or GL-6 in cooler climates, a higher viscosity if you wheel in warmer climates or tow.
Thanks Jerry, what is viscosity, is there a number?
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97 TJ
4" Full Traction long arm lift
1" MML
1" BL
Procomp 15x8
35" BFG MT
Front D30 with ARB
Rear D44 with ARB
Tera 4:1
Tera rear disc conversion
T-Max 9500 winch
LOD rear bumper/tire carrier
Currie HD steering setup
Electric fan
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Unread 02-20-2005, 08:15 PM   #4
Los
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The ARB recommended Lubricants Specifications are as follows:

Normal/Typical use: SAE 90 or GX90

Heavy off road use: HD 85W-140 or GX140

High temperature/Desert use: S 80W-140 or SHC 80W-140

Low temperature/winter use: S 75W-90 or SHC 75W-90
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Unread 02-20-2005, 08:22 PM   #5
Stu Olson
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ARB also states in their owner docs that the friction modifier used in limited slip diffs is perferred but not required (for improved operation).
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Unread 02-20-2005, 08:46 PM   #6
Jerry Bransford
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Quote:
Originally Posted by Stu Olson
ARB also states in their owner docs that the friction modifier used in limited slip diffs is perferred but not required (for improved operation).
And it is the rare GL-5 or GL-6 gear lube that doesn't already contain a friction modifier additive. The presence of the additive can be verified on the label on the rear of the bottle where it will say 'Compatible with limited slip differentials' or words to that effect.
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Unread 02-20-2005, 09:17 PM   #7
Stu Olson
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Yes, Jerry, I know that.....I've been reading labels for quite some time now.

The reason I mentioned it was so that folks who DO read the gear lube labels and may wonder about the friction modifier causing a problem for the ARB (most folks always preach it is needed for clutch pack LSDs) would not have to worry about it. Unfortunately, some folks never get their ARB documentation from the installer and so don't have easy access to the information. If they did, they wouldn't ask what kind of fluid to put in their brand new ARB, right?
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Unread 02-20-2005, 11:51 PM   #8
Jerry Bransford
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Yep Stu of course I knew you knew that, my reply was aimed at those who wouldn't necessarily know that.
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Unread 02-21-2005, 12:58 AM   #9
mookarma
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i didnt know that you didnt know that he knew that you knew that (stu )
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Unread 02-24-2005, 06:04 PM   #10
merdas
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I put "Castrol Hypoy C Gear Oil" SAE 80W-90. Please confirm that this is wright kind of stuff for my new 44 with ARB.
Thanks
__________________
97 TJ
4" Full Traction long arm lift
1" MML
1" BL
Procomp 15x8
35" BFG MT
Front D30 with ARB
Rear D44 with ARB
Tera 4:1
Tera rear disc conversion
T-Max 9500 winch
LOD rear bumper/tire carrier
Currie HD steering setup
Electric fan
merdas is offline   Reply With Quote
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