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Proper fluid for t-case?

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Old Aug 3, 2016 | 09:24 AM
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Proper fluid for t-case?

Can somebody tell me what the proper fluid is for the t-case on my '13 XLT? I want to change it.

I'm also going to do the rear axle since that's simple. Is that 75W140 full synthetic?

I didn't see any of this in my owners manual.
 
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Old Aug 3, 2016 | 11:31 AM
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An auto parts store like NAPA should be able to look those up and tell you what is correct. I haven't needed to service mine yet.
 
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Old Aug 3, 2016 | 11:34 AM
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Went to my local dealership and they looked my truck up. The t-case uses special fluid now called Transfer Case Fluid (really ingenious name, huh?) and it's $9 bucks per quart. I bought two quarts to do my case.

The rear end takes 75W140 full synthetic. They get $21/quart for it so I passed. I'll pick that up elsewhere.
 
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Old Aug 3, 2016 | 11:36 AM
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Thanks for passing that along!
 
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Old Aug 3, 2016 | 12:34 PM
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Don't forget the friction modifier if you are running a Limited-Slip rear. The E-Locker & Open Diff don't require it.
 
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Old Aug 7, 2016 | 06:54 PM
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How often does the T-case fluid need to be changed? This truck I have now is my first 4x4. Thanks!
 
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Old Aug 8, 2016 | 01:52 PM
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Originally Posted by Pgh Rebel
How often does the T-case fluid need to be changed? This truck I have now is my first 4x4. Thanks!
The manual for my '13 states 150k miles, along with front and rear diff fluid and trans fluid. I'm sure some will do it sooner depending on usage and safety factors they would like to use.
 
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Old Aug 8, 2016 | 05:55 PM
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Yeah my truck is at 103,000 so I wanted to be proactive and get my stuff done. So I've done coolant flush, spark plugs, trans. fluid and filter, and t-case fluid this year. I plan to do rear diff. as soon as I get time. I likely won't do front diff. because of the difficulty level.
 
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Old Aug 8, 2016 | 10:21 PM
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Originally Posted by Robbgt
The manual for my '13 states 150k miles, along with front and rear diff fluid and trans fluid. I'm sure some will do it sooner depending on usage and safety factors they would like to use.

Thanks Robb! I was planning on doing both at 100k or sooner because I think that's when most recent automatics need to be flushed. Nice to know I have that buffer if I need it. We'll see what kind of garage space I have by that time, but that may be something I'll have to take it to my mechanic for, or to the Ford dealer. Right now I've only got 32,000 on 'er so I got plenty of time.
 
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