Hi guys,

Getting ready to do 1st fluid change on 2005 350Z just purchased with 130,000 miles.

Is this Valvoline 75W-90 OK for both the Manual Transmission and the rear diff. It says it's GL4 and GL5 compatible.


And has anyone used this Triax fluid for their transmission and any opinions?


Thanks!!

 

For the 6MT, I highly recommend Redline MT-85, it was specifically formulated for manual transmissions on Z32/Z33 & G35s.
But to answer your question, the FSM does recommend API GL-4 75W-85 or GL-4 75W-90 for the 6MT. I recommend staying away from 75W-90 unless you live in a very hot climate or plan to track the vehicle.

The FSM recommends API GL-5, SAE 80W-90 (1.4L) for the rear differential.

Do you have a factory equipped vLSD or are you open diff?
Cheers!
-Icer

 

Thanks for the response. As far as I know, the rear diff is still OEM, so I believe it's the VLSD. Running the VIN and other features lead me to believe the car is a Touring model, which I believe came with the VLSD. Would that change the fluid suggestion?

 

I thought it might, but after some checking, no it won't change the diff fluid you run. The vLSD unit inside the pumpkin is sealed (not serviceable). I never payed much attention to the vLSD requirements since I started with an open diff base model and later on upgraded to a OS Giken Clutch style LSD. In short, whether you have an Open diff or vLSD, the fluid type/capacity is the same.
Cheers!
-Icer

 

Thanks for the input. We went with the Redline MT-85 for the MT and the Pennzoil 80w-90 for the diff.