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djgodden's avatar
djgodden
Explorer
Apr 28, 2016

Differential fluid thoughts/recommendations...

I'm getting ready to put a new larger differential cover onto my TV differential (2012 4x4 2500 Ram Laramie Longhorn w/6.7 Cummins). The standard fluid is 75W-90 for rear and ATF+4 for front. Should...
Tow Vehicles
Jarlaxle's avatar
Jarlaxle
Explorer II
May 02, 2016
coolbreeze01 wrote:
Synthetic 75w-90 in the rear is OE. Some are using 75w-140 due to high temps.
75w-90 in the front.


Chrysler has spec'd 75W-140 axle oil (which is also a sneaky way to require synthetic, since I recall all 75W-140 is) for heavy-service for a while. I recall my Magnum, my Dakota, and my Cherokee all called for it if they were used for towing.

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