i have 33k when should i change it!!

 

look in the owners manual?!?!? it should be 30k.
-GP-

 

should i use aftermarket brand fluid like royal purple or red line! or should i just stick to oem fluids.

 

whatever floats your boat, just make sure its approved for infiniti/nissan drivetrains.
-GP-

 

do a search on here...i saw a thread somewhere about it...all differences with synthetic and reg oil....

 

You'll be in for a suprise! Take a pic when you change it.

 

.......and is the right viscocity.....

I do my rear diff. at about 10-15k, and tranny at about 30-40k.
C.

 

what kind do u guys use?

 

For the rear diff, a good synthetic such as mobile one would be sufficient. For the ATF, if you don't use the official Nissan brand J-Matic, it will void your tranny warranty.

 

how much do dealers usually charge to change the differential oil and tranny oil?

 

Can someone confirm that our manual or service booklet recommends to change MT fluid at 30k miles? I've been asking my dealer to change it, and he tells me it never needs to be changed, and kind of refuses to do it. Anybody with information?

 

I changed mine for the first time at about 42k. It was black as tar with lots of metal flakes in it.

 

Never???!!!! Sounds like a crazy man to me. Normally when you change your Clutch, they have to drain the Tranny fluid, so that might be why he says never, because he figures your going to change your clutch enough to not have to worry about your tranny fluid.

 

This stuff was highly recommended to me for my nissan

http://specialtyformulations.netfirm...32ff5fb1287f50

 

^^^Good find, thanks.

I've heard of some that work well too.
GM Synchromesh FM (semi synth blend) and Redline MTL.

‘Bythabay’, known as the local maintenance ***** on here, recommended:
Amsoil SVG (rear Diff) and Amsoil MTG (gearbox)

Here’s the post, which also talks about when to change fluids:
https://g35driver.com/forums/northern-california/113325-when-should-tranny-oil-changed.html