It doesn't need to be full for me, anywhere near mid territory for me. LSD.... are we looking for unicorn here ? hahahaha :P Correct me if I'm wrong here, LSD only useful when you are taking corner where it limit the slip difference between the inside and outside wheel. In term of straight line acceleration, I don't think it makes much of a different I guess, unless only one of the wheel lose traction badly. I guess, that's the way to go :(