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DIY: Rear Differential Oil Change

Originally Posted by MattP725 Anyone know if we can get away with using a non-Nissan washer? Every dealership around me needs to order the part and I wanted to do

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Old 11-06-2011, 05:20 PM   #61 (permalink)
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Originally Posted by MattP725 View Post
Anyone know if we can get away with using a non-Nissan washer? Every dealership around me needs to order the part and I wanted to do my diff/trans this weekend.
While the part number for the Nissan metal gasket is 38351B, as seen in the exploded differential illustration, the SKU# is 11026-Z34006, which is what the parts department needs to find the part. The first dealer I went to couldn't figure it out, but the second one did.

Nissan metal gasket 38351B = SKU# 1026-Z34006
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Old 11-27-2011, 11:58 AM   #62 (permalink)
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Just did mine at 2900 miles.What came out just scared me.Black stinky oil,and about half an inch of metal shaving on the magnet.Hope that is part of brake in.
Will do another change in spring,or at least once a year.Filled with Redline Gear Oil 75-90.Tranny is next.Hope the warm weather holds up,so next weekend project.Great write up.
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Old 12-02-2011, 07:23 PM   #63 (permalink)
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I changed my diff oil today and ScGRacer stopped by in his white Nismo to do the same. I have 27k on my car and figured it was about time to do the change. Redline was not available locally so we each grabbed two quarts of Royale Purple 75W90 which claims to be great with LSD's and is both GL-4 and GL-5 compatible. I'm sure you don't have to change it so early but it's piece of mind.

I'm under my car, ScGRacer helping out.


You can see all the metal shavings and sludge stuck to the magnetic bolt.




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Old 12-13-2011, 11:16 PM   #64 (permalink)
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Just did both of the Z's today and surprised at the color of the oil drained and the xxxxxxx on the magnetic drain plug.

First some history on both car(s).

Both are 2009 MT w/34k miles on the OEM factory installed gear oil (as in never been drained)
Reside in Northern California
Cars are garaged all of the time
Daily Driven and spirited canyon driving


After viewing the magnetic drain plug and the color of the oil being drained and after reading and seeing and hearing a lot of members drain results has me wondering IF the difference in my drains and the rest has anything to do with geographical location/weather and whether or not the car is garaged.

Any-who here are the pics. Both Z's had the same results. No sludge and hardly any metal shavings. The oil being drained still has the honey colored. All I can say is I am glad it looks like this at 34k miles on it's first drain.












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Old 12-19-2011, 11:36 AM   #65 (permalink)
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^ interesting.....
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Old 02-19-2012, 06:19 PM   #66 (permalink)
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im looking forward to changing mine. This looks like fun! I'll be changing mine around 3500 miles.
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Old 02-19-2012, 06:32 PM   #67 (permalink)
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im looking forward to changing mine. This looks like fun! I'll be changing mine around 3500 miles.
beware of foul odors when you drain the fluid.
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Old 02-21-2012, 01:41 PM   #68 (permalink)
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Default New to changing diff fluid

Hey guys, I have never had to change the diff fluid on a car, and this doesn't look any harder than an oil change....

My main questions:
I have a 2009 Sport Touring Auto... Do I need to use any sort of special fluid?
Also, I am a fan of synthetics, what's a good synthetic diff fluid?
And lastly, how much fluid do I need to buy?

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Originally Posted by spearfish25 View Post
Yep, the fluid smells gnarley. I didn't notice any performance or sound difference. It's more peace of mind knowing you got the nasty factory fill out. I'll be doing the transmission oil this week which I expect will give a noticeable difference.
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Old 02-21-2012, 04:01 PM   #69 (permalink)
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^ I use Redline
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Old 02-22-2012, 07:36 PM   #70 (permalink)
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I changed my differential fluid today.. the process was fairly easy, I only had issues getting the actual fluid in the differential itself, having an aftermarket exhaust and the loaction of the filler hole made it a pain in the azz. But all in all, Im happy. I used Mobil 1 75w-90 Synthetic.
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Old 02-25-2012, 03:40 AM   #71 (permalink)
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Gotta do mine in the spring. Subscribed for future reference.
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Old 03-22-2012, 08:36 PM   #72 (permalink)
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I just went to a shop to get it done. They said I needed 3 quarts not 2. I was confused by this and referred to this thread. They said it requires 3 and that they won't do it using 2 quarts as it is not safe?
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Old 03-22-2012, 09:15 PM   #73 (permalink)
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I just went to a shop to get it done. They said I needed 3 quarts not 2. I was confused by this and referred to this thread. They said it requires 3 and that they won't do it using 2 quarts as it is not safe?
Not as safe? LOL.

They are screwing up their units. For the record, it takes 1.5 quarts which is 3 pints. If you buy 2 quarts, you have more than enough oil to completely top it off and have some left over.
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Old 04-12-2012, 07:40 PM   #74 (permalink)
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another good write up, thanks!
(rep'd)

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Old 04-22-2012, 04:59 AM   #75 (permalink)
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Can I use the regular LSD Red Line oil listed in the OP's DIY in a Base model open differential? I just ordered two...should have asked this question before I suppose.
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