I have an 04 Mach 1 with 20k and I noticed that my trans seems to have a faint whine in every gear and what sounds like synchro whine when I am coasting in neutral. The car has a Steeda Tri-ax but it seems like it should shift through the gears smoother and be less whiney. I know this has been a thread many times but I would just like to get a straight answer about if changing the trans fluid has been helpful (and what kind of trans fluid to use) or if this is just the way the 3650s are and I'm just being too picky.