Originally Posted by
homeschoolin
Is Mobil 1 Synthetic 75W-140 LS the preferred rear differential fluid for my axle or are there other fluid options that I should consider?
That's what I used, it already contains the friction modifier so no need to add any, it is very expensive, but I had no chatter while turning. Be advised they do sell a sealant made for this type of fluid as it seems to eat the sealant and I ended up having to redo the gasket cause it started leaking
http://www.permatex.com/products/Aut...tv_sealant.htm
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Permatex® Gear Oil RTV Sealant
OEM specified. Specially formulated to withstand the harsh gear oil environment found in differentials and transfer cases. Because gear oil has friction modifiers that break down normal RTV and cause leaking, this specialty silicone has been tested to OEM specifications to ensure complete sealing. As a gasket maker it seeks and seals leak paths that cut gaskets