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Old 06-21-2012, 11:12 AM   #1
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Transfer case fluid change question

I looked around a bit, but even my manual doesn't say what the capacity of the TC is. I have a 2011 Rubicon if that makes a difference. Also, I have recently switched my motor oil to Amsoil, and I would like to use that in the TC and diffs as well. On Amsoil's site, there appears to be a few different choices. So I guess my question is, what is Amsoil's ATF+4 equivalent?

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Old 06-21-2012, 02:37 PM   #2
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I found it

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Old 09-18-2012, 10:52 AM   #3
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Well what's the answer? I would like to switch to that myself.
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Old 09-18-2012, 10:56 AM   #4
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Quote:
Originally Posted by rustycj7jeep View Post
Well what's the answer? I would like to switch to that myself.
AMSOIL Synthetic Multi-Vehicle Automatic Transmission Fluid
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Old 09-19-2012, 09:10 AM   #5
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SilverSport thank you. I might be confusing myself here (TC vs Differential). I need to drain my differential oil and replace it. I am at 30,000 and *really* need to do this. I checked that link but it seems its for automatic trans. My Rubicon is a 6 speed manual. I went to that link and looked around and I think I need this AMSOIL Manual Transmission & Transaxle Gear Lube 75W-90 however its saying GL-4 and my manual requires GL-5. Input anyone?
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Old 09-19-2012, 10:31 AM   #6
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Quote:
Originally Posted by rustycj7jeep View Post
SilverSport thank you. I might be confusing myself here (TC vs Differential). I need to drain my differential oil and replace it. I am at 30,000 and *really* need to do this. I checked that link but it seems its for automatic trans. My Rubicon is a 6 speed manual. I went to that link and looked around and I think I need this AMSOIL Manual Transmission & Transaxle Gear Lube 75W-90 however its saying GL-4 and my manual requires GL-5. Input anyone?
This fluid is rated GL-5 but can also be used in axles requiring a GL-4.

Use this to look up the correct fluids: AMSOIL Online Product Application Guide

The 6 speed manual uses 5W-30 Synchromesh fluid: AMSOIL Manual Synchromesh Transmission Fluid 5W-30
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Old 09-23-2012, 07:27 PM   #7
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For AXLE Differential Front and Rear, can one use 75W-90 where 80W-90 or equivalent is stated in the users manual Rubicon 2008 6 Speed Manual? Didn't say recommended or required which is a big difference. I searched online about this 80W vs 75W and most are saying its about 99% the same. I want to use Mobil #1 Synthetic but can only find 75W-90 and I don't want to use those others like Advance Auto 80W-90 fluid. Help!!! I already drained the oil from both axles.
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Old 09-23-2012, 08:08 PM   #8
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Yes, a 75W-90 synthetic is fine. If you tow, use 75W-140 in the rear diff.

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