Had the leaky seal on the differential output shaft three times on my '00.
Woke up to this
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Instructor
Joined: Feb 2016
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Woke up to this
Woke up to this after taking it for a drive after sitting for 2 weeks. I am no mechanic but know it is oil and is not tranny oil. Any ideas where this could be coming from so I dont get raped when take it to shop.
"My Dad's a TV Repairman"
Joined: Jul 2014
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From: San Diego
Differential output shaft seal within all likelyhood; get a light on both output shafts, although it may be coming from the fill plug- Get a 10MM hex socket on it and check for tightness.
Pro
Joined: Jul 2010
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From: Aurora Colorado
Isn't the differential vent on the driver's side of the differential?
It could be just a small amount of the differential fluid venting . My C5 has done that on very hot days when driving at high speed (75MPH) on the highway.
Check and see if the differential is wet on the driver's side top around the vent. If so-you will probably also see a stain of fluid on the driver's side exhaust right before it enters the driver's side muffler.
I think that I can see a stain on your pipe-in your picture. If so--wipe it off the pipe and top of differential (use WD40 to clean the pipe) and see if it recurs after a drive.
It could be just a small amount of the differential fluid venting . My C5 has done that on very hot days when driving at high speed (75MPH) on the highway.
Check and see if the differential is wet on the driver's side top around the vent. If so-you will probably also see a stain of fluid on the driver's side exhaust right before it enters the driver's side muffler.
I think that I can see a stain on your pipe-in your picture. If so--wipe it off the pipe and top of differential (use WD40 to clean the pipe) and see if it recurs after a drive.
Last edited by phoneman91; Jun 19, 2016 at 12:09 PM.
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From: Chicagoland
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Drifting
Joined: Oct 2008
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From: Wilmington DE
Mine was doing the same thing. I replaced the shaft seals on both sides and the cover seal on the passenger side. While I had everything up in the air I popped off the factory vent and now have a hose and breather hooked instead. The factory vent is known to seize up which causes the pressure to leak out somewhere else.
Drifting
Joined: Apr 2009
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From: Boulder City NV
Double pain here my steering rack sprinkles a bit (I add a bit of fluid occasionally) , and my engine check is currently on with a trans code. Trans was rebuilt 2 yrs ago..gggrrrrr
I am officially ignoring both for awhile.
I am officially ignoring both for awhile.
Drifting
Joined: Oct 2008
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From: Wilmington DE
Burning Brakes
Joined: Jan 2015
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From: Bakersfield CA
Isn't the differential vent on the driver's side of the differential?
It could be just a small amount of the differential fluid venting . My C5 has done that on very hot days when driving at high speed (75MPH) on the highway.
Check and see if the differential is wet on the driver's side top around the vent. If so-you will probably also see a stain of fluid on the driver's side exhaust right before it enters the driver's side muffler.
I think that I can see a stain on your pipe-in your picture. If so--wipe it off the pipe and top of differential (use WD40 to clean the pipe) and see if it recurs after a drive.
It could be just a small amount of the differential fluid venting . My C5 has done that on very hot days when driving at high speed (75MPH) on the highway.
Check and see if the differential is wet on the driver's side top around the vent. If so-you will probably also see a stain of fluid on the driver's side exhaust right before it enters the driver's side muffler.
I think that I can see a stain on your pipe-in your picture. If so--wipe it off the pipe and top of differential (use WD40 to clean the pipe) and see if it recurs after a drive.
mine does the same during hot days also, specially on long trips on the highway. Crawl under it and take a look, it's the only way to find out. Good luck.
Thread Starter
Instructor
Joined: Feb 2016
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So I took my 03 z to dealership for oil change and it the leak coming from rear end is coming from differential output seal. I have a mechanic and place to get parts for cost. Can anyone give me lists of parts and fluids (part numbers if you have them)? It will save me a significant amount of $$$$ to buy all the parts needed and just give to mechanic to change. Thanks in advance for the help.