Hope this is the right forum, so here we go: So I went to Autozone and bought 3 quartz of the Pennzoil Synchromesh. I put it in the tranny and now I am kind of regreting it. The Good: shifts during normal driving are nice and buttery reverse is easier to get into grinds at lower rpms dissappeared slides right into first gear while slowing down with little effort The Bad: I started to have grinds in 2nd and 4th gear while racing when the fluid heats up, isn't as efficient my overall opinion, I don't like it. I can feel the difference under normal conditions, but while racing i was disappointed. So if you have slight grinds and what-not, Synchromesh is not magic fluid. It might help your grinds, it might not. i'm going to try Honda MTF on my next fluid change. Don't get me wrong though, the fluid is doing what it was intended for, I just had higher hopes for it. Incase you were wondering, I was using Exxon 10w-30 in my tranny before.