part number and spec for genuine BRZ tranny fluid?
 

Hi,
I did more research on this and I like to know who makes the genuine gear oil for the manual transmission for the 86 platform? I like to know the viscosity index, @40C and @100C. I have MTL now and I'm thinking of either synhcromax or MTF2...but also an additive to make the shifting smoother and protect the gears. So if you know the part number and specs...please let me know. I search through the forums and internet and couldn't find it...I see extra S, but don't think that applies to BRZ. Thanks!