differential fluid changed 2x
Thread Starter
Drifting
Joined: Sep 2000
Posts: 1,588
Likes: 0
From: las vegas nv
differential fluid changed 2x
13000 miles 06 A6 vert and rear end is yelling at me again for 3rd time. Going in next week for new clutch packs. Anyone know is they are using a better replacement material?
Le Mans Master
Joined: Jan 2005
Posts: 5,611
Likes: 5
From: Thousand Oaks California
At one time (early 2006) the fibre clutch disc where going to be replaced with carbon cltuch disc. Not sure if that occured?
MONARTOR
Joined: Aug 2001
Posts: 250,144
Likes: 146
From: What I know, is dwarfed by what I pretend to know
Cruise-In 5-6-7-8 Veteran
St. Jude Donor '03 thru '26
NCM Sinkhole Donor
get back to me after the 5th time, along with the clutch pack and rear differential 
Le Mans Master
Joined: Jan 2001
Posts: 6,449
Likes: 371
From: Maryville TN
St. Jude Donor '06-13,'16-'17, '19
Before letting the dealer disassemble your car, try adding another bottle of GM friction modifier to your diff. (part number 1052358)
This made my rear silent after 2 drain and flushes failed to solve the problem.
And yes, my car still leaves 2 very black strips of rubber when doing a burn out.
Tom
This made my rear silent after 2 drain and flushes failed to solve the problem.
And yes, my car still leaves 2 very black strips of rubber when doing a burn out.
Tom
Melting Slicks
Joined: Sep 2004
Posts: 3,488
Likes: 27
From: Long Island NY
If this is truly a cure with no adverse side effects, I wonder why GM just doesn't do it. It makes sense that the extra friction modifier additive would help keep the clutches quiet, and apparently a lot of dealers had been simply dumping in extra additive anyway... even though not specificed by GM in the TSB. I'd think there would be a good reason that GM would not specify the use of extra additive... because it would be SO much cheaper and easier for them to go this route as opposed to changing clutch packs etc! If and when my differential noise comes back, I think I too will try adding a bit of extra additive after another flush.
Safety Car
Joined: Oct 2005
Posts: 3,775
Likes: 19
From: Santa Clara, CA
If this is truly a cure with no adverse side effects, I wonder why GM just doesn't do it. It makes sense that the extra friction modifier additive would help keep the clutches quiet, and apparently a lot of dealers had been simply dumping in extra additive anyway... even though not specificed by GM in the TSB. I'd think there would be a good reason that GM would not specify the use of extra additive... because it would be SO much cheaper and easier for them to go this route as opposed to changing clutch packs etc! If and when my differential noise comes back, I think I too will try adding a bit of extra additive after another flush.
Are they defective? Are they subject to failure with too many burn outs? Why do some make noise and the majority don't? I don't understand this issue. Please someone advise. 
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CF Senior Member
Joined: Feb 2006
Posts: 23,313
Likes: 25
From: Tucson Arizona
I've never had any problem with the differential on my 2005. As a matter of preventative maintenance I just changed the transmission fluid to Royal Purple. I planned to change the differential fluid to Royal Purple but now I'm wondering....should I leave well-enough alone? If it ain't broke....
Le Mans Master
Joined: Jan 2005
Posts: 5,611
Likes: 5
From: Thousand Oaks California
If this is truly a cure with no adverse side effects, I wonder why GM just doesn't do it. It makes sense that the extra friction modifier additive would help keep the clutches quiet, and apparently a lot of dealers had been simply dumping in extra additive anyway... even though not specificed by GM in the TSB. I'd think there would be a good reason that GM would not specify the use of extra additive... because it would be SO much cheaper and easier for them to go this route as opposed to changing clutch packs etc! If and when my differential noise comes back, I think I too will try adding a bit of extra additive after another flush.
Racer
Joined: Jul 2006
Posts: 462
Likes: 8
From: Las Vegas NV
Le Mans Master
Joined: Mar 2006
Posts: 8,913
Likes: 15
From: El Segundo California
St. Jude Donor '06-'07-'08-'09-'10-'11-12-'13-'14-'15-'16
Pulled this from the FAQ's
http://forums.corvetteforum.com/show....php?t=1249546
Mine just started doing it too.
http://forums.corvetteforum.com/show....php?t=1249546
Mine just started doing it too.
Le Mans Master
Joined: Jan 2001
Posts: 6,449
Likes: 371
From: Maryville TN
St. Jude Donor '06-13,'16-'17, '19
