Rad_Slinger

iTrader: (12)

I like this guy.....

Coprolite

I guess I should have been more specific, like what is the specification of the factory fill. I am really trying to find the actual viscosity ratings and VI, but if someone knew the name I could track down the specs. TVPostSound understood the gist of the question.

Black Betty

iTrader: (60)

Oh,I thought you actually meant what brand is it. For the '08 I posted the viscosity in the first post. I haven't checked to see if it's changed in subsequent years but I doubt it. I don't know all the egghead technical specs of the fluid, only the viscosity.

LTrainG37

iTrader: (2)

Did this yesterday. I was going to jack up all 4 corners at first but decided I'd try and get under the car without putting it on stands. Was able to squeeze my way under the rear of the car (and I'm not a small dude at 6' 220 lbs) and get the fill plug out first, then drained the fluid into my catch pan. Let it drain for a good 20 minutes while I changed the cabin air filter... easy peasy. Made me miss wrenching on my Jeep and my truck that I had before this car, but it was nice not having to remove the diff cover and deal with the RTV and all that.

The fluid that came out was the factory fluid - had 33.5K miles on it and looked/smelled normal. Pic of the drain plug below. Filled it with Mobil1 75W-90.

2009G37Bandit

LOL

Pull the cover,,,,,,,,,geesh! Nice way to be diplomatic Double B.

Bandit..................

KENNEDY

Question regarding friction modifier-

To my limited knowledge.. TV was suggesting adding a friction modifier because you have the S with limited slip diff.

I have the journey, no lsd, so I don't have to add a friction modifier?

I'm planning on using Mobil 1 75W-90.

EnviedG35

iTrader: (2)

Bringing this back since im looking at doing my diff fluids. I have an LSD, so if i get the this Motul Performance Oil Store - MOTUL Authorized Dealer , I do not need to add the modifier as well? Or do i still need to add the modifier?

canucklehead

iTrader: (9)

most guys will do just fine without the modifier. just listen when you are rounding tight corners. if you hear/feel some chatter then you should add it after.

EnviedG35

iTrader: (2)

I did a little more research and the Motul 300LS is all i need. Its made for Nissan LSD's so i should be fine. A local guy is running in it his 575 whp TT 370 and has never had a problem.

canoncleguy

iTrader: (1)

Thanks a lot! I am planning to do my 60K service very soon and this is one of the DIYs I am looking for.

OMG35S

iTrader: (2)

Just out of curiosity, what does chatter feel/sound like from the differential and when would you hear/feel it?

JSolo

iTrader: (14)

Chatter sounds/feels like the rear end is binding up. Easiest way to test for this is to to turn the steering wheel hard lock to one direction, then start moving at slow speed. If there's no binding/chattering (keep windows down), then you're fine.

I'd get this occasionally in my old taxi cab (posi rear end) when I didn't use the additive.

sydnrusty

iTrader: (2)

I'm going to use the Amsoil synthetic gear lube. The product description says it's compatible with most LSD's but if chatter occurs to use their additive. I'd really rather not have to jack the car up and get under it again to add the additive after the fact if I need it. Is there any harm in just including it in the first place? Or does the Amsoil lube alone reliably provide everything our cars need?

Rad_Slinger

iTrader: (12)

I have the amsoil in my pumpkin, and I have zero chatter and have had no problems at all.

I'd hold off on the additive, but to answer your question....I don't think it would harm anything to just include it anyway.

kdawg8526

iTrader: (2)

sorry if this has been covered but is it ok to use motul pa 90 lsd gear oil for the vlsd differential?