Replacement for VersaTrak-fluid finally here?

[odecif]

I was looking around (again) for trying to get a hold on the infamous and expensive 10-4058 VersaTrak-fluid when I stumbled upon this GMPartsDirect page which now states that the fluid has been replaced by 10-4032 "Rear Axle Lubricant SAE 75W-85, API GL-5", which seem to be a standard others than Royal Purple has a substitute for (Ravenol, Wynn's etc).

Has anyone tested this fluid in their VersaTrak differentials? I might test it out if I cannot get a hold of the 10-4058 fluid here.

 

[nascarnation]

I put Castrol Transynd ATF (Allison TES-295) in the rear diff/rwd clutch module on my old Saturn Vue which is spec'd for Versatrak and it seems to be doing fine.