Ive been running it in my Truggy for almost 18 months now (still on the initial change). It is far better than gear oil and ATF was. My buggy about halfway through a hard wheeling trip is pretty hot and the shifting became a bitch when I was using gear oil. The ATF made it a little bit better but then for shits and giggles I decided to try the above fluid and it is FAR superior. My shifting never becomes difficult anymore, and its very smooth/quiet. I even swapped it into my other B2 which is a DD, and although that truck doesnt get beat on, it also shifts much smoother now. That is the truck I used to run 0w30 in.
If you're interested in that product, let me know.