LSD Fluid

You are correct about the automatic transmission fluid. I don't know about Mobile 1 or others, but Amsoil does not list that it can replace Toyota ATF-WS. Toyota does state to use Toyota ATF-WS "or equivalent" but Toyota also states that using any other brand may cause serious problems. I would not use anything but the Toyota brand for transmission fluid just to be safe, but that is just me.

As for the diffs, I did a brief search and I see what you are saying about finding 75w-85. I had no idea that this was such a rare weight. If I could find it in a quality synthetic, then I would switch in a heartbeat. If anyone has better search skills and knows of one, then any help would be appreciated. Also, I do not know enough about mechanics to know if switching to another weight will void the warranty or in any way adversely effect the differentials. Any information on this would be greatly appreciated also. Thanks in advance!

 

Recovered an old thread about Diff oils:

Since our last conversation about 75w-85 diff oil, I've found this from redline:

http://www.redlineoil.com/product.aspx?pid=40&pcid=4