Front and rear diffs and transfer case??? - Ford Powerstroke Diesel Forum
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Old 06-02-2012, 08:15 PM
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Front and rear diffs and transfer case???

Well I hit 100k today and would like to change the front and rear diffs and the transfer case. Could anyone tell me what fluids to use and how much I will need. I have the 3.73 limited slip. I plan on getting royal purple with the friction modifier already in it. I just need to know weights and quantities. Thanks.
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Old 06-02-2012, 09:12 PM
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Quote:
Originally Posted by strokinpower View Post
Well I hit 100k today and would like to change the front and rear diffs and the transfer case. Could anyone tell me what fluids to use and how much I will need. I have the 3.73 limited slip. I plan on getting royal purple with the friction modifier already in it. I just need to know weights and quantities. Thanks.


I'd also lIke to know
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Old 06-02-2012, 09:56 PM
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80w90 front, 75w140 rear and Mercon V in the transfercase.
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Old 06-03-2012, 02:52 AM
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thanks, do you know how much of each?
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Old 06-03-2012, 04:16 AM
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anyone???????
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Old 06-03-2012, 04:31 AM
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For the front diff you will need 5.8 pints (2.8L) of SAE 80W-90 Premium Rear Axle Lubricant

For the rear diff you will need 6.9 pints (3.3L) of SAW 75W-140 Synthetic Rear Axle Lubricant

For the transfer case you will need 2 Quarts of Motorcraft Transfer Case Fluid (XL-12)
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Old 06-03-2012, 07:52 AM
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Fluid change

I changed all the running gear (including trans) to Amsoil @ 5000, miles. Before I sold it, @ 200,000 miles, my 05 F250, 4x4, 6.0, auto, 3:73's, pulled a 40' toy hauler 80% of the time. No problems with any of the running gear.
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Old 06-03-2012, 11:41 AM
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Well this is what I ended up doing today...
oil change (motorcraft 15W40)√
fuel filters (Racor)√
transfer case (Mobil 1 ATF)√
rear diff (Valvoline Synth for limited slips)√
rotate tires √
I'm friggin beat. I decided against doing the front because I don't think it needs it and it isn't recommended until 150k. I don't use 4WD much anyway.
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