I have a 06 AT G35 coupe. im looking to have the rear differential fluid changed.

The dealer cant sell the infiniti OEM diff fluid (80w90), coz hey buy it in bulk and they didnt recommend an aftermarket alternative. so im looking for help on the g35driver forums as to which 1 to use.

After researching, i have found quite a few aftermarket alternatives thrown around. but i think i have narrowed it down to Motul, amsoil or Mobil1.

Motul seems to be quite popular, but looking @ their website..they have 3-4 options and im not sure which 1 to get.

- Gear 300 (75w90)
- Gearbox 80w90
- HD 80w90
- Motul 90pa 90 (recommended by simoneperformance)

amsoil on the other hand as the following:

- Severe Gear 75w90
- Synthetic 80w90 gear lube.

i know there isnt much diff between 75w90 and 80w90..except may be 75w been better in colder temps...

so any suggestions..insights..feedback...anything...

 

I've used 75W90 Lucas, Castrol and GM synthetics.

 

I use this and so do several other local members. PM me for the hookup if you want dealer price.

 

+1 for severe gear

 

Do whatever Wayne tells you.

 

in the M?

 

In the G.

 

I use the Motul gear 300 but don't use it in your 6mt tranny it is too slippery and the syncros won't spin up fast enough. But i use it in the rear diff For my 6mt trans I use the motylgear I think they recently changed names on the product line?? For the engine I use X-Cess 8100 they all seem to work well for me.

 

will give ams oil SVG 75w90 a shot for the rear diff..
as for tranny..i have the 5AT, so i only use OEM nissan J fluid religiously...

However...im kinda confused as to the VLSD...i have the premium package on my 06 5AT coupe...so do i have the clutch type or Viscous LSD...?

 

I am using Motul 90 PA for rear diff. I have Infiniti G35 sedan 6mt revup engine 298hp sport, limited slip diff.