AMS Oil in Diffs and Transfer Case?

[arich]

I have 10 extra bottle of AMS Oil 75W-90 Gear Lube
https://www.amsoil.com/shop/by-product/gear-lube/75w-90-long-life-synthetic-gear-lube/?code=FGRQT-EA
Has anyone used this in their 200 or do you go with OEM? Getting close to 50K and I'm going to change out the oil in the Diffs and Transfer case.

Thanks,
Anthony