im not sure, but i just switched mine to mobil 1 atf after my clutch job. at first it wasnt any better. but now its def a bit smoother. not a whole lot. but definately noticable. before i sometimes had issues even getting it into first. i had to jsut start in 2nd sometimes. it hasnt done that yet. instead it just takes a bit more effort and it pops in. although, i recently noticed that i have also developed a leak. which kinda ****** me off cause i dont know what its from. it could be cause of the transition to synthetic. but i suppose i could have also nicked that seal around the axles. havent looked into it yet. will let you konw what cause of leak is soon.