Oil For Anti-Spin Differential Rear Axle ?

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kurek

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If so, were these also AAM Trac-Rite all gear Torsen, or just their version of wet clutches?

the geared ones were in HD trucks, 1500's got clutches with no preload (loading supplied by BLD, presumably much longer clutch life this way)
 

joelmic

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No recommends for Royal Purple ???
 
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kdupreez

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Does the Valvoline have enough friction modifier in it? Keep an eye or ear out for chattering for awhile just in case.

From another membear earlier, seems it does:

I use valvoline synt 75w140 rear and 70w90 front on my diffs though this last time i put Mobil 1 in the front cause i couldn't get Valvoline 70w90. I do have factory LSD and my truck runs in the dirt a lot.zero issues with Valvoline and i don't need to add aditional FM . my transfer case gets STP ATF+4 (I have the 44-45)
 

Rod Knock

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Eventually got to this. Valvoline had to do for this job (all they had at Napa) - But I did have some help :)
Valvoline gear oil is good stuff, and probably better than Mobil 1 gear oil. It's not that Mobil 1 can't make a good gear oil, but more like they don't want to cannibalize their own Delvac 1 branded heavy duty gear oils. Oh, and Valvoline gear oil is Milspec if that matters to you.
 
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kdupreez

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doing the transfer case bw44-44 tomorrow. got a few quarts of this atf, it will work OK based on earlier posts?

PXL_20210801_022335280.jpg
 

slickracer

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Are you changing the transfer case or transmission?
 
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kdupreez

kdupreez

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transfer case. I edited my post above, I should have scrolled a little to transfer case.. Amsoil recommends the RED cap for 44-44 transfer case
 
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