rear end oil suggestions
#11
^^^ You can't go wrong really. I've got all Royal Purple Synthetic in mine (minus the Friction Modifier of course). After the fact, I've heard Royal Purple Diff oil isn't the best - but I don't remember why. I'll let you know if that's true this coming season - haven't really driven the Mustang since the new diff. oil went in.
#12
Another way to go is to use Redline Gear Oil, as it comes with 5% slip modifier already in it, which should be enough. If you use too much friction modifier, you're basically defeating the purpose of the LSD.
#16