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Rear Differential question #5169039 07/23/19 02:48 PM
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dawgn86 Offline OP
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Good afternoon,

2008 Nissan Frontier Pickup / 115000 miles..been hearing a scraping noise for awhile now and took it into a trusted, local shop. Get a call saying the rear differential is bad. Couple of options were to get a reman from Nissan, but could take days..or get a used one. I went with the used one; 60000 miles on it..getting put in tomorrow.

My question is, should I run it a day or so and do a drain and fill on the diff fluid? Just to be sure the fluid is clean, etc?

Thanks


2019 Acura MDX
2019 Ford F150
2007 Acura MDX
2016 Volvo XC90
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Re: Rear Differential question [Re: dawgn86] #5169071 07/23/19 03:35 PM
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oldhp Offline
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I would drain fluid and take a look at it. Refill with your favorite gear goo and repeat at 10K miles or what ever your maintenance plan is. Good Luck!!!


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Re: Rear Differential question [Re: dawgn86] #5169073 07/23/19 03:36 PM
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NormanBuntz Offline
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You certainly want fresh fluid, but buy a bottle or two of your choice and let the indie shop add it.


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Re: Rear Differential question [Re: dawgn86] #5169164 07/23/19 06:12 PM
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gathermewool Offline
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how bad was the scraping, WHAT was scraping, and what did it sound like?

40/40 hindsight, but I feel like I would have run it until it was causing actual problems.


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Re: Rear Differential question [Re: dawgn86] #5169184 07/23/19 06:26 PM
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buck91 Offline
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The differential was bad like the ACTUAL differential or like a lazy mechanic who didn't want to do a proper rebuild? Unless there is something special about your application dif's aren't rocket science.


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Re: Rear Differential question [Re: dawgn86] #5169219 07/23/19 07:00 PM
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joekingcorvette Offline
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Too late now but I would have obtained a second opinion. Rear ends usually last longer than the mileage you indicated. Hopefully its not a u-joint or
brake or some other common problem. Yes, drive it and change the rear end fluid again.


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Re: Rear Differential question [Re: buck91] #5169224 07/23/19 07:03 PM
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clinebarger Offline
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Originally Posted by buck91
The differential was bad like the ACTUAL differential or like a lazy mechanic who didn't want to do a proper rebuild? Unless there is something special about your application dif's aren't rocket science.


Everyone wants to swap parts, Been that way for awhile now.


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Re: Rear Differential question [Re: dawgn86] #5169236 07/23/19 07:12 PM
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ejes Offline
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I believe the Titans had rear end overheating problems due to a bad axle design and started putting an updated design on somewhere in the year '08. However, they typically showed issues around the 50k mark instead of where you are at.

Re: Rear Differential question [Re: dawgn86] #5169270 07/23/19 07:52 PM
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dawgn86 Offline OP
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If it was my local daily vehicle, I would drive it longer and see. It belongs to my son who lives out of town.

I put new rotors and pads on, but noise was still there. Truck has given us zero problems until this.

Noise was a scraping, grinding sound..only heard it at lower speeds.


2019 Acura MDX
2019 Ford F150
2007 Acura MDX
2016 Volvo XC90
2013 Toyota Tacoma PreRunner
Re: Rear Differential question [Re: dawgn86] #5169272 07/23/19 08:00 PM
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4WD Offline
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They will have it in the air and could do the oil in minutes

Re: Rear Differential question [Re: dawgn86] #5169288 07/23/19 08:11 PM
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dawgn86 Offline OP
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They will refill with fresh oil when they change the diff, I was wondering if it was a good idea to change after a 100 miles or so


2019 Acura MDX
2019 Ford F150
2007 Acura MDX
2016 Volvo XC90
2013 Toyota Tacoma PreRunner
Re: Rear Differential question [Re: dawgn86] #5169335 07/23/19 09:19 PM
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benjy Offline
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which diff? the regular, regular 4 wd or the nissan dana 60. i dumped the cheap but costly OE semi-syn for all redline fluids. dana-spicer recommends real synthetic, i used the 75-90 rather than the 75-140 OE molasses in the rear of my nissan-dana diff. i haul little + feel the real ester synthetic is much better, also installed the titan finned aluminum cover as the frontier uses the same rear 4 wd diff. theres also a 75-110 i believe or make your own!

Last edited by benjy; 07/23/19 09:20 PM.
Re: Rear Differential question [Re: dawgn86] #5169343 07/23/19 09:26 PM
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4WD Offline
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Nah … If it’s an used rear axle … Gears, pins, spiders, are all broke in.
I’d only change it now to make sure it’s not on original gear oil with break in metal still in that lube.
Run that oil 30k or more …

Last edited by 4WD; 07/23/19 09:28 PM.
Re: Rear Differential question [Re: dawgn86] #5169384 07/23/19 11:39 PM
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Y_K Offline
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'used' ones come from car-parts dry, professors


Re: Rear Differential question [Re: dawgn86] #5169425 07/24/19 04:35 AM
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Linctex Offline
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Originally Posted by dawgn86
They will refill with fresh oil when they change the diff, I was wondering if it was a good idea to change after a 100 miles or so


There is no need.

It will probably last the rest of the life of the truck.


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