My car is a 2008 Touring so it should have VLSD. However I went to install my Nismo diff cover today and the gears look like open gears. I thought VLSD should be a sealed unit.

How can you tell? Here are two pics of my pumpkin opened up.

 

The info you need can be found here....

https://my350z.com/forum/engine-and-...-question.html

 

I'll take pics tomorrow of an open diff if you like, but that unit in your picture looks like LSD to me.

 

thats a vlsd for sure. also every z comes with vlsd except the base. im 100% on that, i just did mine.

 

thanks guys. vlsd doesn't last that long anyway. so maybe i'll upgrade in anyways. Would love a Quaife but mine isn't base so probably doesn't fit.

 

why wouldnt it last long? mines lasted just fine, high hp guys dont have problems either

 

They last a long time as long as you change your fluid... There are Quaife models that fit automatics, base, and VLSD models so that should not be a problem.

If you do any organized racing an aftermarket LSD is a great buy... otherwise the VLSD does its job OK.

 

it does not matter if you change your fluid or not with the stock. the vlsd is a sealed unit with fluid inside. once that fluid loses it's viscosity then it stops working.