So I went to Napa to see if they sold Redline mt-90. Unfortunately they don't. I only been to napa a couple of times, since I work at autozone I dont have to make trips anywhere else. At my store we dont even sell it.

While I was browsing the gear oil section. I noticed Sta-Lube gear oil.

they had a variety of weights. I did notice the 85W-90 API/GL-4 gear oil. The manual recommends 80w-90 GL-4.

Specs on link

http://www.crcindustries.com/ei/content/prod_detail.aspx?PN=SL24229&S=N

I'm curious if this is any good or bad for our trannies? Anyone ever used Sta-Lube gear oil?