Burned rear diff oil

lhinojos · 08-15-2016, 04:23 PM

So I was at auto club speedway this past weekend, 100+ degree weather, and I'm sure I burned the fluid. I have an open diff and I was running r-comp tires.

I didn't notice a whine until my third session, and at first I thought it was my tires screeching because I could only hear it at lower speeds, but in just one lap, it went from that, to full screeching under any acceleration and the car was smoking. When I got to the garage and checked it, the breather valve must have been vomiting because they're was fluid everywhere.

Tried to let it cool off, but it was no good and had to limp the car home(no tow truck) l would get it up to 35 mph then coast until I needed to get speed again. I only live 20 mins from ACS

My question: my hopes are that all I have to do is change the diff oil and all will be ok? Or is it possible that I ruined the diff somehow? What should I look for when I change the fluid?

2012 base I had redline in there changed about 9 months prior

Thanks in advance.

scope22 · 08-15-2016, 05:55 PM

from my experience once you hear the whine the damage is done, once you replace the fluid it will keep whining so you need to fix it or it will lock up on you one day

Wonka2581 · 08-15-2016, 06:11 PM

Sounds like its time for an upgrade. That sound your hearing is the sound of money you need to spend. BUT you will much happier in the long run, I promise...

lhinojos · 08-15-2016, 10:49 PM

Quote:

Originally Posted by Wonka2581

Sounds like its time for an upgrade. That sound your hearing is the sound of money you need to spend. BUT you will much happier in the long run, I promise...

I'm sure I would, unfortunately my wallet isn't happy enough for an upgrade lol so your saying there's no coming back after the whine is present? What exactly went wrong? Is there something I can replace or rebuild inside the diff?

Wonka2581 · 08-15-2016, 11:35 PM

Quote:

Originally Posted by lhinojos

I'm sure I would, unfortunately my wallet isn't happy enough for an upgrade lol so your saying there's no coming back after the whine is present? What exactly went wrong? Is there something I can replace or rebuild inside the diff?

You won't exactly know what went wrong until you open it up and take a look. But from the sounds of your post, you had catastrophe failure.

SouthArk370Z · 08-16-2016, 12:03 AM

As per Wonka2581, you won't know for sure until you take a look. Your description (and the fact that you drove it so far in that condition) doesn't make me optimistic. But you might get lucky.

lhinojos · 08-17-2016, 12:53 AM

It's toast. Flushed fluid, still whining.

08-15-2016, 04:23 PM	#1 (permalink)
lhinojos Track Member Join Date: Apr 2012 Location: Riverside, CA Posts: 559 Drives: 12 370z GM M6 Rep Power: 14	Burned rear diff oil So I was at auto club speedway this past weekend, 100+ degree weather, and I'm sure I burned the fluid. I have an open diff and I was running r-comp tires. I didn't notice a whine until my third session, and at first I thought it was my tires screeching because I could only hear it at lower speeds, but in just one lap, it went from that, to full screeching under any acceleration and the car was smoking. When I got to the garage and checked it, the breather valve must have been vomiting because they're was fluid everywhere. Tried to let it cool off, but it was no good and had to limp the car home(no tow truck) l would get it up to 35 mph then coast until I needed to get speed again. I only live 20 mins from ACS My question: my hopes are that all I have to do is change the diff oil and all will be ok? Or is it possible that I ruined the diff somehow? What should I look for when I change the fluid? 2012 base I had redline in there changed about 9 months prior Thanks in advance.

08-15-2016, 06:11 PM	#3 (permalink)
Wonka2581 A True Z Fanatic Join Date: Nov 2012 Location: Chattanooga, TN Posts: 3,083 Drives: MY WIFE CRAZY.... Rep Power: 2612	Sounds like its time for an upgrade. That sound your hearing is the sound of money you need to spend. BUT you will much happier in the long run, I promise... lhinojos likes this. __________________ "I have nothing to offer but blood, toil, tears and sweat""Winston Churchill"

08-16-2016, 12:03 AM	#6 (permalink)
SouthArk370Z Premium Member Join Date: Nov 2010 Location: South Arkansas Posts: 8,435 Drives: 2014 Challenger Rep Power: 324198	As per Wonka2581, you won't know for sure until you take a look. Your description (and the fact that you drove it so far in that condition) doesn't make me optimistic. But you might get lucky. Wonka2581 likes this. __________________ Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma

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08-15-2016, 05:55 PM	#2 (permalink)
scope22 A True Z Fanatic Join Date: Apr 2012 Location: Roswell, GA Posts: 1,179 Drives: wife crazy Rep Power: 55	from my experience once you hear the whine the damage is done, once you replace the fluid it will keep whining so you need to fix it or it will lock up on you one day

08-17-2016, 12:53 AM	#7 (permalink)
lhinojos Track Member Join Date: Apr 2012 Location: Riverside, CA Posts: 559 Drives: 12 370z GM M6 Rep Power: 14	It's toast. Flushed fluid, still whining.