I have never really heard of using syncromesh, so bare with me. My LS has a high 3rd gear grind, so I am contemplating on trying to fix it with the above information. So, I just go to the store, and buy as much syncromesh as I would regularly use to fill the tranny, drain and then fill 100% with this stuff? No MTF needed? Thanks, I just wanted to be completely sure before I did this so I dont fuck up my motor.