What a good oil to run in the trans
everyone will have their own opinion on this question...
I ran Bel-Ray Gear Saver and Motul for years in the tranny, which are good...but you're paying for the name more than anything.
I run what the manual calls for these days...plain old 10w-40, change it often, you won't have any problems what-so-ever, and you'll save a ton a money.