Need Help on Fluid choice

67_Slimer said

I have an 833 in my Dart. Well built 340 and aggressive driver :p I've been running the Sta-Lube 85W90 hypoid gear oil in mine. When I just went to purchase more , it looks like it has been discontinued.
1) Am I wrong that it's been discontinued?
2) If so , what is a good equivalent oil to run in there or the proper fluid ? Was that even a good fluid to run in it?
Thank you in advance.

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Kind of a can of worms question, because there’s so many varied opinions.
I have to agree with the Lucas if you want a good quality product.

For what it’s worth, when I ran older manual transmissions I would customize the fluid mix depending on how the trans reacted.
Some work great with 85/90 and some worked better with 30wt, and then some even better with ATF.
It depended on how it shifted mostly.