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TJDiver 05-15-2012 12:32 AM

NSG 370 Transmission Fluid?
So changing out the fluid during a clutch replacement, and noticed the transmission fluid was kind of thin. I call the dealership telling them i was trying to obtain fluid, and asking what type it was. They said it was NSG 370, and not to use any other type. It doesn't seem odd they would say i have to use their brand, but it does seems odd to me they would use such a thin fluid. Any ideas on this, should i replace to factory specs? Should i use your standard transmission fluid? Royal Purple. Looking for the know how out there. Thanks!

gixxerphil 05-15-2012 12:48 AM

I have the NV3550, and I use Amsoil.
Here's a search from an 05 4.0, you can change the vehicle specs if needed
AMSOIL Product Recommendations - 2005%7cJEEP%7cWRANGLER%7cS

lynn 05-15-2012 07:39 AM

I have the NSG 370 6-speed in my 05 LJ. I run Amsoil Synchromesh. No problems, smoother shifting than the factory fluid.

Ya, compared to old, heavy-duty transmissions, these NSG 370s run a thin fluid.
Do not attempt to run a thicker fluid.

TJDiver 05-15-2012 10:08 AM

I appreciate the heads up! I was going to buy from the stealer ship, but they are charging me 22 bucks for it

RubiCobra 05-15-2012 12:21 PM

RP Synchromax works just fine.

Jerry Bransford 05-15-2012 02:20 PM

Redline MTL, Royal Purple Synchromax, and Amsoil Synchromesh are all good choices for the NV3550 and NSG370.

crisjacof 05-27-2012 11:03 PM

How many quarts does the transmission take? I'm about to change mine. And what kind of oil for the tc its a np231? how many quarts?

trail420 03-22-2013 05:18 PM

So I just picked up 3 qts of tranny fluid from my dealer and it says nsg 370/nv 3500 on it and they're unfortunately closed in the parts dept for the weekend and this was the fluid they said I needed but its used for six speeds right? I need to know before I use it if its safe. I have a 03 wrangler 2.4 5 Spd transmission

Jerry Bransford 03-22-2013 05:23 PM

That gear lube is what you want for your NV1500 transmission as well. The NV3550, NV1500, and NSG370 all require the same type of gear lube.

trail420 03-22-2013 05:27 PM

So I can use it lol I just get paranoid

trail420 03-22-2013 05:35 PM

Thanks again jerry

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