Jump to content

Due to a hardware failure on the hosts systems, all posts and messages created between May 26th and Jan 13th have been lost. Additionally, if you joined the NPORA Forums community during that time, you'll need to re-register. -NPORA Mod Team *Updated: 05/19/2022 12:15AM PST

Fluids - Limited Slip, Transfer Case & Front Differential


Recommended Posts

I’m about to do a fluid change on everything & noticed I couldn’t find recommendations on NPORA. I’ve heard of using Amsoil, Valvoline, Royal Purple, Red Line, Motul, Castrol & Mobil One. I’ve also heard of friction additives necessary with some. I thought a discussion of people’s preferences, schedules & pearls of wisdom might be a lively exchange! Oh yeah, volumes too.

  • Like 2
Link to comment
Share on other sites

I thought there was a sticky about fluids for the wd21. Should be similar for your rig. Maybe it didn't make it in the forum transfer? 


Afaik, the only box that was particular about fluids was the wd21 manual transmission. Otherwise, if the rear end is limited slip, then make sure the gear lube has limited slip additive or you can add some if it doesn't come with it. 


I wouldn't get hung up on brands. Look at owners manual for viscosity recommendations and get whatever is readily available. 

Link to comment
Share on other sites

This is the thread for WD21s.

I'm running 5W30 in my engine (Valvoline high-mileage synthetic blend, mostly because it was cheap), generic parts store dex/merc in the auto trans and the transfer case, and I still need to get around to changing the fluid in the diffs.

  • Like 1
Link to comment
Share on other sites

Here is the info from the FSM. Personally, I would like to use a synthetic blend where possible. Surprisingly, I can't find an 80W-90 Limited Slip Gear Oil though Valvoline has a Semi-Synthetic brand. Given I'd like to never change it again, I would really like to use synthetic for the diffs and transfer case.


I'm also interested regarding greasing the propeller shaft. My 2002 LE Maintenance manual says you never grease the propeller shaft but the FSM appears to say differently.


Transfer  Case


3 1/8Qt / 3L




Oil capacity:

Front 1.85L (3-7/8 US pt, 3-1/4 Imp pt)

Rear 2.8L (5-7/8 US pt, 4-7/8 Imp pt)


Power Steering

Genuine Nissan PSF II or equivalent (Dexron III/Mercon)





Propeller Shaft

NLGI No. 2 (Lithium Soap Base)




  • Like 1
Link to comment
Share on other sites

I've read that the clutches in the limited slip don't grab properly with synthetic lube. I have no way to confirm this, but will probably use conventional oil when I get around to it.

Okay, good to know. I somehow ended up on a couple GTR forums. Incredible amount of detail & experience there but then they’re running Supercars so I’m not so sure that info translates to an R50
Link to comment
Share on other sites

The only 80w-90 I found with limited slip additive was the Valvoline semi synthetic. You can always get additive and add it to any gear oil you want. Nissan may even sell bottles of the additive, I know Ford does. 

  • Like 1
Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

Welcome to NPORA Forums


Please register to gain full access to the forum.

Make sure you read the Forum Guidelines and don't forget to post a new intro in the New People Start Here! section, to say hi too everyone.



  • Create New...