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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...
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jake2250's avatar
jake2250
Explorer
Apr 28, 2016
I just changed the differential fluids and transfer case on my 2012 Silverado 2500HD.
I used Mobil 1 75-90 Full synthetic, I have 35000 on the clock and I gotta say that I am noticing a 1 to 1.5 MPG increase! Truck actually feels like it has less rolling resistance. I used Valvoline full synthetic in the transfer case..

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