diff gear oil choice

YELOSNK

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In preparation for getting the pinion leak fixed, I wanted to ask if there's any preferred diff fluids to use. I was looking at Amsoil Severe Gear, RP Max Gear, or possibly Redline Shockproof and leaning towards Amsoil.

And then I'm unsure on 75w90 vs 75w140. Most of the Cobra's time will be (spirited) street driving, but I would also like to survive the odd open track day.
 
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me32

BEASTLY SHELBY GT500 TVS
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Any of those choices work fine. 75w 140 is what is recommended for the traction lock diff. If you went with something else they might recommended a different weight.
 

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