Yes, major difference right away. I've had it for several months already. I tried going through my build thread real quick to see if I could find when I posted it, but couldn't. Probably one of the best upgrades for my tranny haha. It was notchy and felt "grindy" every time I shifted gear, but now it feels more smooth. Also, when trying to shift quickly at higher rpms, I could not smoothly go into the next gear and would end up misshifting. Now, with the new MTF, the tranny shifts more smoothly. I can't really determine if it was the GM fluid itself that caused such a dramatic change; because, I was low on MTF. I guess the previous owner never replaced it and it basically took 2-3 seconds for the old fluid to finish draining. lol. I did decide to go with this fluid over amsoil, royal purple, and Honda MTF because of the reviews that I've read about it from others' experiences.