41,000 miles on my 2015 Cadillac ATS4 2.0t and the rear end started making some noise. It might not help, but I'm going to change the gear oil... plus I'm very curious to see what it looks like inside.

PROPER FLUID SPEC: DEXRON MTF 75W-90 (GM Part No. 88863089)
BUT this stuff is what I like: https://www.amsoil.com/p/severe-gear-...

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