I just thicken up my used engine oil with some gellatin and it works great for my tranny.

You should be able to get the fluid from "USA Performance" on Hwy. 29. I put Mobil1 in mine, though.

Can I use Mobile 1 75w-90 in both the tranny and diff.?

what about what kind are you using? like mtl 90 or mt 90? which numbers do you use where?

I use 75w90

I found a shop that stock a BUNCH of Redline stuff.

I bought 3 quarts of MT90 and 75W-90. https://www.nopistons.com/forums/pub...IR#>/bigok.gif

redline worked pretty well for me....... until i messed up the 5th gear synch