So as far as anyone knows, there are no friction modifiers or other additives to make diffs lock/unlock smoother in the Honda oil? I haven't read up on how these diffs lock and I'm assuming it's not anything like an automotive locker like my G80 on my Chevrolet. If you run regular gear oil without any friction modifiers in a G80 you'll get all sorts of grinding noises while turning a corner. And a huge "bang" if you spin a tire.