6MT Tranny/Rear Diff. Question

vtec to vvel · 04-13-2019, 11:30 AM

I understand there are two separate threads regarding the manual tranny and rear diff fluid change and have read every page, but did not find the info. I need and also read a few other pieces of info.

Whenever I type in the plus washer on the courtesy Nissan website, 11026-4N200, it tells me it does not fit my car (‘13 touring/sports). Did they change the part number or will this washer fit my car?

Also, I read that the rear diff fluid specs changed over the years from 80w90 to 75w90?

JARblue · 04-13-2019, 03:06 PM

The washer hasn't changed. That is the correct one. Also, you'll find different part numbers for the diff and trans. But it's the same washer

I've always put 75w90 in my diff. Since 2011. Never seen an 80w90 gear oil recommendation documented.

vtec to vvel · 04-13-2019, 04:31 PM

Quote:

Originally Posted by JARblue

The washer hasn't changed. That is the correct one. Also, you'll find different part numbers for the diff and trans. But it's the same washer

I've always put 75w90 in my diff. Since 2011. Never seen an 80w90 gear oil recommendation documented.

Thanks for the info bro!

I figured it was the same damn piece and even called courtesy Nissan and my local Nissan (ironically also called courtesy Nissan of Tampa) and both told me it would not fit. I’m like wtf and my local Nissan kept referring to the copper washer for the motor oil drain bolt.

Spooler · 04-13-2019, 11:05 PM

No need to replace the washer unless it has gouges in it. I just reuse them until I can't.

JARblue · 04-14-2019, 02:09 AM

They are crush washers and intended to be one-time use. It's a different style crush washer than the copper oil pan ones but too cheap to not replace IMO. I'll bring a dozen of them to ZDayZ for you, Spooler.

Spooler · 04-14-2019, 03:28 PM

Quote:

Originally Posted by JARblue

They are crush washers and intended to be one-time use. It's a different style crush washer than the copper oil pan ones but too cheap to not replace IMO. I'll bring a dozen of them to ZDayZ for you, Spooler.

Really??? you can keep'em. LOL

vtec to vvel · 04-15-2019, 12:26 AM

Quote:

Originally Posted by Spooler

No need to replace the washer unless it has gouges in it. I just reuse them until I can't.

I figured why not just replace if I gotta unscrew it. Cheap insurance.

Quote:

Originally Posted by JARblue

They are crush washers and intended to be one-time use. It's a different style crush washer than the copper oil pan ones but too cheap to not replace IMO. I'll bring a dozen of them to ZDayZ for you, Spooler.

Can I has them if spooler declines? Lol

NISMO IX · 04-15-2019, 12:56 AM

Weird, 2014 owners manual says for AT the rear diff gets 75W90 and the MT diff gets 80W90

physics · 04-23-2019, 08:45 PM

Quote:

Originally Posted by JARblue

... I've always put 75w90 in my diff. Since 2011. Never seen an 80w90 gear oil recommendation documented.

I bought a 2019 sport coupe with the 6MT and the Nissan owner's manual specs an 80W-90 conventional super hypoid GL-5 gear lube for the diff. I changed it out with Redline 75W-90 diff oil and the driveline friction is noticeably less.

vtec to vvel · 04-23-2019, 10:08 PM

Quote:

Originally Posted by physics

I bought a 2019 sport coupe with the 6MT and the Nissan owner's manual specs an 80W-90 conventional super hypoid GL-5 gear lube for the diff. I changed it out with Redline 75W-90 diff oil and the driveline friction is noticeably less.

I guess it varies by the year, which is what I read in a different thread.

04-13-2019, 11:30 AM	#1 (permalink)
vtec to vvel A True Z Fanatic Join Date: Feb 2015 Location: 813 Posts: 3,915 Drives: 13 Z Rep Power: 502909	6MT Tranny/Rear Diff. Question I understand there are two separate threads regarding the manual tranny and rear diff fluid change and have read every page, but did not find the info. I need and also read a few other pieces of info. Whenever I type in the plus washer on the courtesy Nissan website, 11026-4N200, it tells me it does not fit my car (‘13 touring/sports). Did they change the part number or will this washer fit my car? Also, I read that the rear diff fluid specs changed over the years from 80w90 to 75w90? __________________ Don't like what I post? Too bad. I really don't give a sh!t

04-13-2019, 03:06 PM	#2 (permalink)
JARblue A True Z Fanatic Join Date: Mar 2011 Location: Austin, TX Age: 43 Posts: 36,450 Drives: 11 Z34, 98 E36 M3 Rep Power: 2684440	The washer hasn't changed. That is the correct one. Also, you'll find different part numbers for the diff and trans. But it's the same washer I've always put 75w90 in my diff. Since 2011. Never seen an 80w90 gear oil recommendation documented. Hotrodz and vtec to vvel like this. __________________ 2011 370Z 6MT Sport Gun Metallic \| ARC \| CJM \| Ecutek \| FI \| Fujimura \| R2C \| SPL \| Stillen \| TWM \| Z1 \| ZSpeed \|

04-13-2019, 11:05 PM	#4 (permalink)
Spooler A True Z Fanatic Join Date: Jun 2014 Location: Ga Posts: 13,800 Drives: 2013 Nismo 370z Rep Power: 2684392	No need to replace the washer unless it has gouges in it. I just reuse them until I can't. Rusty likes this.

04-14-2019, 02:09 AM	#5 (permalink)
JARblue A True Z Fanatic Join Date: Mar 2011 Location: Austin, TX Age: 43 Posts: 36,450 Drives: 11 Z34, 98 E36 M3 Rep Power: 2684440	They are crush washers and intended to be one-time use. It's a different style crush washer than the copper oil pan ones but too cheap to not replace IMO. I'll bring a dozen of them to ZDayZ for you, Spooler. Memphis370Z and vtec to vvel like this. __________________ 2011 370Z 6MT Sport Gun Metallic \| ARC \| CJM \| Ecutek \| FI \| Fujimura \| R2C \| SPL \| Stillen \| TWM \| Z1 \| ZSpeed \|

04-15-2019, 12:56 AM	#8 (permalink)
NISMO IX Track Member Join Date: Sep 2015 Location: Southern Maine Age: 47 Posts: 742 Drives: 2014 370Z MB M6 Rep Power: 584	Weird, 2014 owners manual says for AT the rear diff gets 75W90 and the MT diff gets 80W90 __________________ 2017 Ford Focus RS Nitrous Blue "KB43VER" 2014 370z Mag Blk 6M "KOKURYU" (Black Dragon)

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