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Cold rear diff drops fluid at startup ONLY

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Old Feb 23, 2020 | 09:36 AM
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Edmund Iverson's Avatar
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Default Cold rear diff drops fluid at startup ONLY

Hi all, I have an interesting phenomenon going on; When I start up my 2000 A4 base convertible in cold temps (35-45 degrees), I get several drops of rear differential fluid spilled onto my garage floor. It's like the system is expelling air or something. It is not a constant leak, and it does NOT happen in the summertime heat. Does anyone have any insights into this? I'm only concerned that I may end up running low on differential fluid;
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Old Feb 23, 2020 | 10:12 AM
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What part of the diff is the leak coming from?
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Old Feb 23, 2020 | 01:40 PM
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It seems to be in the center, just above the spring
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Old Feb 23, 2020 | 01:46 PM
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Try and post a pic. You should see saturation
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Old Feb 23, 2020 | 01:53 PM
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Take a look near the vent tube - there could be intermittent leakage there if the vent begins to fail. This thread has a bit of info in it.

https://www.corvetteforum.com/forums...d-removal.html
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Old Feb 23, 2020 | 04:32 PM
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Thanks guys, I'll have to get the car jacked up tonight or tomorrow and get some pictures
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Old Feb 23, 2020 | 05:06 PM
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Yeah. I mean at the end of the day you got a bad seal somewhere. Chances are torque tube, trans and diff has to come out. Might as well replace the clutch too.
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