DIY: Rear Differential Oil Change

dthem370 · 01-04-2011, 12:38 AM

I bought this fluid transfer pump and it didnt work at all for me.

Amazon.com: Sierra Tools JB5684 Battery Operated Liquid Transfer Pump: Home & Garden

So I just bought a standard hand pump and that did the job.

Chuck@Z1 · 01-04-2011, 01:36 PM

There are several different versions of the Redline Fluid and they cover a wide range of uses and abuses.

The Redline 75W90 NS actually lacks some of the friction modifiers found in the regular 75W90 which makes it less slippery and ok to use in a transmission and more aggressive in a differential. That does not mean use it! Please keep reading.......

We have been using Redline for some time at the shop and the fluids we use for the following applications are....
We use the normal 75W90 as Spearfish and several others have already stated for the differential. You can find it on our site HERE.
We have recently begun using Redline's MT-85 for transmission fluid. We have been using the MT-90 in 300ZX's for some time but this fluid did not work well in 350Z and 370Z's. Redline specifically lists this fluid for use in the 370Z. You can see it on their site HERE. I really appreciate a customer and forum member for pointing this fluid out to us. The MT-85 fluid can be found on our site HERE.

Finally you can find the metal washers for the drain plugs on our site HERE.

This is what we have found works well in the majority of 370Z applications. If you are using your car for some extreme application you may want to look into another Redline fluid for your car but so far these fluids have worked well.

daisuke149 · 01-04-2011, 03:04 PM

Quote:

Originally Posted by Chuck@Z1

There are several different versions of the Redline Fluid and they cover a wide range of uses and abuses.

The Redline 75W90 NS actually lacks some of the friction modifiers found in the regular 75W90 which makes it less slippery and ok to use in a transmission and more aggressive in a differential. That does not mean use it! Please keep reading.......

We have been using Redline for some time at the shop and the fluids we use for the following applications are....
We use the normal 75W90 as Spearfish and several others have already stated for the differential. You can find it on our site HERE.
We have recently begun using Redline's MT-85 for transmission fluid. We have been using the MT-90 in 300ZX's for some time but this fluid did not work well in 350Z and 370Z's. Redline specifically lists this fluid for use in the 370Z. You can see it on their site HERE. I really appreciate a customer and forum member for pointing this fluid out to us. The MT-85 fluid can be found on our site HERE.

Finally you can find the metal washers for the drain plugs on our site HERE.

This is what we have found works well in the majority of 370Z applications. If you are using your car for some extreme application you may want to look into another Redline fluid for your car but so far these fluids have worked well.

I agree with this and have used these fluids in my car. So far no issues. The tranny fluid does make the shifting smoother and easier esp at cold temps.

FricFrac · 06-13-2011, 07:18 PM

Quote:

Originally Posted by Chuck@Z1

There are several different versions of the Redline Fluid and they cover a wide range of uses and abuses.

The Redline 75W90 NS actually lacks some of the friction modifiers found in the regular 75W90 which makes it less slippery and ok to use in a transmission and more aggressive in a differential. That does not mean use it! Please keep reading.......

We have been using Redline for some time at the shop and the fluids we use for the following applications are....
We use the normal 75W90 as Spearfish and several others have already stated for the differential. You can find it on our site HERE.
We have recently begun using Redline's MT-85 for transmission fluid. We have been using the MT-90 in 300ZX's for some time but this fluid did not work well in 350Z and 370Z's. Redline specifically lists this fluid for use in the 370Z. You can see it on their site HERE. I really appreciate a customer and forum member for pointing this fluid out to us. The MT-85 fluid can be found on our site HERE.

Finally you can find the metal washers for the drain plugs on our site HERE.

This is what we have found works well in the majority of 370Z applications. If you are using your car for some extreme application you may want to look into another Redline fluid for your car but so far these fluids have worked well.

Has anyone tried the Redline Shockproof Light for the rear diff?

tranceformer · 06-13-2011, 07:48 PM

Quote:

Originally Posted by FricFrac

Has anyone tried the Redline Shockproof Light for the rear diff?

Nope but I've used that in the transmission by recommendation from a friend. It worked well in his G35 and my 350Z.

fjpthree · 06-16-2011, 06:45 PM

At what mileage did you do the fluid change. (I did not see this mentioned in the maintenance manual..only an inspection..)

1325 · 06-16-2011, 06:54 PM

I changed my differential fluid at 29,160 mi.

Thanks for the write-up, by the way!

spearfish25 · 06-16-2011, 07:08 PM

Glad this is helping everyone out. I've made a point to change my rear diff fluid every spring...essentially every 8k miles.

FricFrac · 06-17-2011, 08:53 AM

Quote:

Originally Posted by spearfish25

Glad this is helping everyone out. I've made a point to change my rear diff fluid every spring...essentially every 8k miles.

I'm assuming you're changing it this frequently because you track the car?

MattP725 · 07-14-2011, 08:33 AM

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.

CrunchyCajun · 11-06-2011, 04:20 PM

Quote:

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 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

KusoSama · 07-15-2011, 12:41 AM

You prob could get it from the site I go to. Nissanparts.cc

Chuck@Z1 · 07-15-2011, 09:00 AM

You could use a regular copper/al crush washer since Nissan doesn't have any.
We sell them HERE if you are stuck on the Nissan washer.

If this is your first time you can probably get away with not changing it because it is a solid crush washer. This is not a guarantee it wont leak but 99% of the time you can get away with reusing it as long as it wasn't damaged or over-tightened.

MattP725 · 07-15-2011, 11:07 AM

Thanks Chuck... normally I would order OEM but I have all the redline fluid and I am pretty much hellbent on doing the change this weekend.

Ron · 10-09-2011, 11:25 AM

So I have 11k miles on my car, changing the diff oil next weekend. I just saw this thread and the nasty oil coming out at just 4kmiles and it got me thinking..Should I have changed it before?

06-16-2011, 07:08 PM	#8 (permalink)
spearfish25 A True Z Fanatic Join Date: Mar 2009 Location: Naples, FL Posts: 4,117 Drives: to work Rep Power: 1857	Glad this is helping everyone out. I've made a point to change my rear diff fluid every spring...essentially every 8k miles. __________________ 2013 Cadillac V-Wagon, RIP Z

07-15-2011, 12:41 AM	#12 (permalink)
KusoSama Base Member Join Date: Jul 2010 Location: UP Posts: 127 Drives: 2010 370Z Sport MB Rep Power: 16	You prob could get it from the site I go to. Nissanparts.cc __________________ K&N Drop-in Filters \|\| Invidia Gemini CBE \|\| ERZ High Flow Cats \|\| Uprev \|\| 3.54 Final Drive

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01-04-2011, 12:38 AM	#1 (permalink)
dthem370 Base Member Join Date: Sep 2009 Location: San Diego Posts: 163 Drives: Nissan 370Z Rep Power: 16	I bought this fluid transfer pump and it didnt work at all for me. Amazon.com: Sierra Tools JB5684 Battery Operated Liquid Transfer Pump: Home & Garden So I just bought a standard hand pump and that did the job.

01-04-2011, 01:36 PM	#2 (permalink)
Chuck@Z1 Base Member Join Date: Jun 2010 Location: Carrollton Posts: 91 Drives: Varies Rep Power: 16	There are several different versions of the Redline Fluid and they cover a wide range of uses and abuses. The Redline 75W90 NS actually lacks some of the friction modifiers found in the regular 75W90 which makes it less slippery and ok to use in a transmission and more aggressive in a differential. That does not mean use it! Please keep reading....... We have been using Redline for some time at the shop and the fluids we use for the following applications are.... We use the normal 75W90 as Spearfish and several others have already stated for the differential. You can find it on our site HERE. We have recently begun using Redline's MT-85 for transmission fluid. We have been using the MT-90 in 300ZX's for some time but this fluid did not work well in 350Z and 370Z's. Redline specifically lists this fluid for use in the 370Z. You can see it on their site HERE. I really appreciate a customer and forum member for pointing this fluid out to us. The MT-85 fluid can be found on our site HERE. Finally you can find the metal washers for the drain plugs on our site HERE. This is what we have found works well in the majority of 370Z applications. If you are using your car for some extreme application you may want to look into another Redline fluid for your car but so far these fluids have worked well.

06-16-2011, 06:45 PM	#6 (permalink)
fjpthree Base Member Join Date: May 2011 Location: Maryland Posts: 67 Drives: 09 Touring/Sport/Nav Rep Power: 15	At what mileage did you do the fluid change. (I did not see this mentioned in the maintenance manual..only an inspection..)

06-16-2011, 06:54 PM	#7 (permalink)
1325 Enthusiast Member Join Date: Jul 2010 Location: Florida Posts: 287 Drives: 10 370Z BLK 6M Rep Power: 16	I changed my differential fluid at 29,160 mi. Thanks for the write-up, by the way!

07-14-2011, 08:33 AM	#10 (permalink)
MattP725 A True Z Fanatic Join Date: May 2011 Location: Toms River, NJ Posts: 1,904 Drives: 2010 40th Rep Power: 18	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.

07-15-2011, 09:00 AM	#13 (permalink)
Chuck@Z1 Base Member Join Date: Jun 2010 Location: Carrollton Posts: 91 Drives: Varies Rep Power: 16	You could use a regular copper/al crush washer since Nissan doesn't have any. We sell them HERE if you are stuck on the Nissan washer. If this is your first time you can probably get away with not changing it because it is a solid crush washer. This is not a guarantee it wont leak but 99% of the time you can get away with reusing it as long as it wasn't damaged or over-tightened.

07-15-2011, 11:07 AM	#14 (permalink)
MattP725 A True Z Fanatic Join Date: May 2011 Location: Toms River, NJ Posts: 1,904 Drives: 2010 40th Rep Power: 18	Thanks Chuck... normally I would order OEM but I have all the redline fluid and I am pretty much hellbent on doing the change this weekend.

10-09-2011, 11:25 AM	#15 (permalink)
Ron A True Z Fanatic Join Date: Oct 2010 Location: Houston, TX Posts: 3,009 Drives: TT '11 PW Nismo #113 Rep Power: 22	So I have 11k miles on my car, changing the diff oil next weekend. I just saw this thread and the nasty oil coming out at just 4kmiles and it got me thinking..Should I have changed it before?