I installed this on
Mazda 3

Review
I have been pretty much a supporter of Amsoil product as their are reliable. Quite a few parts of my car runs with Amsoil and this is one of them. Used to have retard gearbox or times where I couldn't engage gear like as though it is stuck but after using this, everything works just fine. Engaging gear is a lot smoother and i go not that gear retard feeling already. Outstanding performance and reliable i would say and definitely recommend if anyone were to ask.

What I like
Reliable, smooth gearbox and no more retard gears

What I do not like
a bit priced on the high side