[Z06] Differential Fluid Change?
Racer
Joined: Jul 2006
Posts: 385
Likes: 1
From: Chapel Hill North Carolina
Differential Oil Change
I believe it takes 1.6 quarts. If you overfill it will come out the overflow tube. I used Mobile 1 w/the GM additive. When I track the car I use Red Line 75/90.. it has a very high flash point.. ... very easy change to do yourself.. '02 ZO6
Former Law Dawg Moderator
Joined: Jan 2005
Posts: 29,434
Likes: 96
From: Eads, Tennessee
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I'd have the bearings checked. I'd also have the tires looked at since you said it all started when the new tires were installed. Did they torque your lugs to 100 lb?
Heel & Toe
Joined: Dec 2000
Posts: 24
Likes: 1
From: Bedford TX
Suspect the wheel bearing
I just solved a similar problem today by having the right rear wheel bearing changed. I had been believing it was the differential for sometime; went through the fluid change thing too. Initial it only seemed to happen on hard left turns, but recently got so bad that even a slight left turn of the steering wheel would cause it be much worse and almost go away with a slight right turn.
Jim
Jim
Premium Supporting Vendor
Joined: Aug 2001
Posts: 5,364
Likes: 38
From: King George VA
Originally Posted by Z06 AXer
I just solved a similar problem today by having the right rear wheel bearing changed. I had been believing it was the differential for sometime; went through the fluid change thing too. Initial it only seemed to happen on hard left turns, but recently got so bad that even a slight left turn of the steering wheel would cause it be much worse and almost go away with a slight right turn.
Jim
Jim
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Burning Brakes
Joined: May 2004
Posts: 770
Likes: 0
From: Nassau County New York
Originally Posted by Subdriver
I've had wheel bearings go bad, but never had one make noise. Maybe that's because I check the play in them and replace them about annually and they might not get far enough along to make noise.
Intermediate
Joined: Apr 2006
Posts: 27
Likes: 1
From: Ottawa Ontario
I have just checked the bearings on other cars by jacking it up and then trying to rock the wheel back and forth. Usually one hand on the top of the wheel and one on the bottom. If it moves, then the bearing is probabaly going.
Dieing bearings make quite a racket though. My Prelude had a bearing go and it was making quite a bit of noise (couldn't talk in the car)...got a lot worse after a track day too
. Typically the noise changes with speed and turning.
Dieing bearings make quite a racket though. My Prelude had a bearing go and it was making quite a bit of noise (couldn't talk in the car)...got a lot worse after a track day too
. Typically the noise changes with speed and turning.
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Burning Brakes
Joined: May 2004
Posts: 770
Likes: 0
From: Nassau County New York
Well today I did the fluid swap with new Mobil-1 and a 3rd party limited slip additive. All my noises went away and it seems to move in reverse a lot easier too. Best $23 i ever spent (2 quarts of Mobil-1 diff fluid, general use grease for my grease gun (another project) and the pump to hook up to my gallon container to pump the fluid in). Otherwise it would have only been like $16 
Burning Brakes
Joined: May 2004
Posts: 770
Likes: 0
From: Nassau County New York
I might have spoke too soon. Most of the noises are gone but when i go in reverse i hear moaning from the rear-end again. I have it going into the dealer next week so I guess i'll see what they find.
Burning Brakes
Joined: Jul 2004
Posts: 773
Likes: 0
From: Normal IL
Originally Posted by noran01
I might have spoke too soon. Most of the noises are gone but when i go in reverse i hear moaning from the rear-end again. I have it going into the dealer next week so I guess i'll see what they find.
Instructor
Joined: Sep 2006
Posts: 143
Likes: 1
From: sacramento ca
front left tire rub
i just bought a 98 vette 1 wk ago and on its second day, i ran into a shovel on the freeway which tore my front left tire. luckily, after pos triple aaa came and told me they could not tow me, i used their jack and jacked the car and took out the shovel. the run flat got me 7 miles to a pepboys practically on rim. well i had the tire changed to the same stock size 245/45/17 and now it rubs on extreme right turns. i think its the front left brake cooling duct but i cant verify it. the duct hasnt moved. help...
Instructor
Joined: Apr 2006
Posts: 212
Likes: 0
From: Guntersville/Arab Alabama
How hard did you hit the SHOVEL!?
It could have knoecked your front end out of line.
It could have knoecked your front end out of line.
Originally Posted by MEXAKNPWR
i just bought a 98 vette 1 wk ago and on its second day, i ran into a shovel on the freeway which tore my front left tire. luckily, after pos triple aaa came and told me they could not tow me, i used their jack and jacked the car and took out the shovel. the run flat got me 7 miles to a pepboys practically on rim. well i had the tire changed to the same stock size 245/45/17 and now it rubs on extreme right turns. i think its the front left brake cooling duct but i cant verify it. the duct hasnt moved. help...
Instructor
Joined: Apr 2006
Posts: 212
Likes: 0
From: Guntersville/Arab Alabama
Did you do a write up on this? i know mine needs to be done. If not can you tell me how you did it? thanks
Originally Posted by noran01
Well today I did the fluid swap with new Mobil-1 and a 3rd party limited slip additive. All my noises went away and it seems to move in reverse a lot easier too. Best $23 i ever spent (2 quarts of Mobil-1 diff fluid, general use grease for my grease gun (another project) and the pump to hook up to my gallon container to pump the fluid in). Otherwise it would have only been like $16
Safety Car
Joined: May 2006
Posts: 4,748
Likes: 250
From: NJ
Sounds like wheel bearings to me. These cars do have a problem eating rear wheel bearings. You will not be able to check for bad bearings by rocking the wheels for the rear bearings. If you can feel rocking in the rear you are way past gone and would probably have to replace the carrier too. It could have been coincindental that you noticed the noise after the new tires or the new tires may add more preasure to the bearing making it louder. This would be more likely if your old tires had worn on the inside or the outside rather than evenly accross. The added strain on the bearing when a tire is wearing unevenly adds to the failure and when you change the tire it may make it more pronounced. Good luck.
Melting Slicks
Joined: Oct 2001
Posts: 2,786
Likes: 22
From: Cary NC
Originally Posted by Subdriver
I've had wheel bearings go bad, but never had one make noise. Maybe that's because I check the play in them and replace them about annually and they might not get far enough along to make noise.
Drivers side rear wheel bearing. Inside the car you would swear it was a ring/pinion noise. Learn something new everyday. So I replaced it and sure enough, problem gone. I'm thinking the 10 track events probably helped it die sooner but the car is an 02 Z06 and it had 13K on it when I got it and started doing track events. It only just turned 32K. I would have expected wheel bearings to last much longer than that.
Graham
Premium Supporting Vendor
Joined: Aug 2001
Posts: 5,364
Likes: 38
From: King George VA
Originally Posted by vms4evr
Drivers side rear wheel bearing. Inside the car you would swear it was a ring/pinion noise. Learn something new everyday. So I replaced it and sure enough, problem gone. I'm thinking the 10 track events probably helped it die sooner but the car is an 02 Z06 and it had 13K on it when I got it and started doing track events. It only just turned 32K. I would have expected wheel bearings to last much longer than that.
