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Discussion Starter #1
I've been searching all over and I'm sorry I don't know the difference between the C200 and the M226. I have the 4wd version of the 2006 Xterra.

Can someone confirm whether I use 75W-90 or 75W-140 in the rear diff?

And it looks like regardless of the model the front is 80W-90.

Thanks!
 

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Is your S model an automatic, or manual trans? If its an auto, you have a C200 rear diff. If its a manual, you have an M226 rear diff. Fluid type and capacity for both are in the Sticky at the top of the powertrain section titled "Reccomended Fluids and Capacities". Here is a link to it: http://www.thenewx.org/forum/showthread.php?t=3912
 

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Discussion Starter #3
Sorry, it's an automatic. I read the sticky and it was confusing, still didn't seem to say with 100% certainty what it was that I needed for the rear diff, just listed the two types. Thanks!
 

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So you have a C200. You need:

Rear Diff:
C200
Type: API GL-5 Synthetic 75W-90 Gear Oil or Equivalent
Capacity: 3 3/8 pt or 1.6L

And for front:

Front Dif (Xterra R180):
Type: API GL-5 SAE 80W-90 Gear Oil or Equivalent
Capacity: 1 3/4 pt or .85L
 

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So you have a C200. You need:

Rear Diff:
C200
Type: API GL-5 Synthetic 75W-90 Gear Oil or Equivalent
Capacity: 3 3/8 pt or 1.6L

And for front:

Front Dif (Xterra R180):
Type: API GL-5 SAE 80W-90 Gear Oil or Equivalent
Capacity: 1 3/4 pt or .85L
Dont for get the crush washers
 

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Dont for get the crush washers
yes, two for the front and one for the rear!! Use rtv grey for the rear fill plug.

I seem to remember that it's all the same washer/part number too.
 

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just did my c200 front rear and tcase. 75/90 back, 80/90 front. its pretty straight forward, lots of DIY's in this forum.
 

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Rear Diff Oil Type

I just checked the owner's manual of my 2011 P4X Auto and it indicated that I need 1.6 liters of the 75W-90 oil for the rear diff. Why is this different than what I read on this site? I hear everyone else is putting in the 75W-140.:withstupid:
 

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This is how I interpret it since the manual transmission xterra has an m226 and the line that specifies 75w140 is on the same line with the M/T spec.

I keep all the service manuals and the owner's manual saved to my phone just in case. I highlighted why I think most use 75w140

(sometimes having a galaxy note 4 is useful)
 

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I just checked the owner's manual of my 2011 P4X Auto and it indicated that I need 1.6 liters of the 75W-90 oil for the rear diff. Why is this different than what I read on this site? I hear everyone else is putting in the 75W-140.:withstupid:
Nissan changed the spec on the Xterra M226 for Model Years 2009-2011 (they went to 75W-90), and then changed back to 75W-140 in Model Year 2012 and going forward.

Here is a thread on the M226 fluid recommendations by Model Year:
http://www.thenewx.org/forum/showthread.php?t=48221&highlight=M226

FWIW, I have asked to have the mods update the recommended fluids and capacities, but that hasn't happened yet.
 

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Does Nissan sell the crush nuts or can you use RTV?
Personally, I would want nothing to do with crushed nuts.

If you are referring to the crush washers, they are available at NAPA, O'Reilly Auto Parts, and I would presume nearly every good auto parts store. (I purchased at NAPA.)

My preference is not to use RTV as a thread sealer when the FSM calls for a crush washer.
 
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