Synchromesh blew up my transmission. I had it in for a few hundred miles. I went to the track and then the next day I was getting on the interstate and it started whining real bad. I took it to the dealer and my tranny was gone.

Oh, it was tested and the lab and the fluid was completely burnt.

 

Its all Ill use in the Evo tranny. We use it in both cars and they both shift like butter. I change it out every othe oil change and its always crystal clear in both cars. Jon at TRE also highly recomends Syncromesh. BG also works well but is more expensive an no better in my expieriences

^^ My guess is that Syncromesh was not your problem trust me.