I need to replace front, back differential fluid and transfer case fluid

2006 DODGE RAM
102,000 MILES • 5.7L • V8 • 4WD • AUTOMATIC
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ZEMORZEMOR
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I need to replace front, back differential fluid and transfer case fluid also.
what type of fluid those three components need? do I need to add anti slip additive to the differentials?

Thank you
Dec 19, 2016 at 7:34 AM
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STEVE W.
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Front differential API GL 5, 75w-90 synthetic gear oil.
Transfer case - ATF +4 or equivalent.
Rear differential - API GL 5, 75w-90 synthetic gear oil.

Without the VIN we cannot tell if it has a Trac-Lok limited slip.
Dec 19, 2016 at 8:12 AM
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ZEMORZEMOR
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VIN 1D7HU18236S615793
THE rear differential was low so i added 75w140. is it ok to put 5w140 instead of 75w90?
Dec 19, 2016 at 7:31 PM
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SATURNTECH9
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No you need put the correct weight oil in.
Dec 19, 2016 at 10:27 PM
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STEVE W.
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Going by the VIN Dodge says you don't have Trac-Lok so no additive required. But If you bought it used, verify that as you never know if that was changed at a later date.

You don't really want to mix lubes in differentials. They are under a lot of stress and mixed lubes can cause problems.
Dec 20, 2016 at 5:56 AM
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ZEMORZEMOR
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the differentials oil and transfer case never been changed.so do i need to do?
Dec 20, 2016 at 7:46 AM
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STEVE W.
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With 102,000 miles on them they are long overdue.
Dec 20, 2016 at 11:14 AM
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ZEMORZEMOR
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can you please tell me the capacity and the torque spec for the differential bolts and the transfer case
Dec 20, 2016 at 9:36 PM