Oil leak mystery

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Mar 11, 2013 | 05:02 PM

#11

Dr.Aronis

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May be differential leaking at output shaft seal. Common issue with transmission in the year. Same thing happened on my RS6 at about 100,000 miles. It's red fluid.

Mar 11, 2013 | 07:11 PM

#12

parkrog2

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From: PARK CITY, UTAH

Quote:

Originally Posted by Dr.Aronis

May be differential leaking at output shaft seal. Common issue with transmission in the year. Same thing happened on my RS6 at about 100,000 miles. It's red fluid.

Anyone have photo of seal location for my next exploration? Where is fill point for differential? Going to drive a week and check again.

Mar 12, 2013 | 06:42 PM

#13

parkrog2

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From: PARK CITY, UTAH

Need help

Anyone have photo of fill point for differential?
Also need to know what type of fluid it uses. Since it might have leaked
need to check level and watch for for leaks?

Mar 28, 2013 | 02:27 PM

#14

parkrog2

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From: PARK CITY, UTAH

Oil Leak

Well cleaned everything off and put on 1000 miles. No leak, everything stayed clean??? Someone suggested front differential! My return trip when it leaked was from Denver on I-80 so I was up at elevation 9000ft at some point? Noticed on attached photo there is an overflow? Anyone know for sure if this is open and not sealed? Only has leaked on one 500 mile trip and than nothing? Roger

Attached Images

Last edited by parkrog2; Mar 28, 2013 at 03:00 PM.

Mar 28, 2013 | 04:26 PM

#15

mishar

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From: Vancouver, Canada

It is closed. Arrow marks it in the second picture.

Mar 28, 2013 | 08:37 PM

#16

s4master1

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Joined: May 2003

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overflow

it musted be the overflow.
if it didn't leak climbing to 9000 feet it means is not boiling.
it probably was overfilled.
check the blue plug on top of transmission

Attached Images

Mar 28, 2013 | 10:25 PM

#17

mishar

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From: Vancouver, Canada

Wrong transmission.

Mar 29, 2013 | 11:28 AM

#18

s4master1

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Joined: May 2003

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wrong transmission

Quote:

Originally Posted by mishar

Wrong transmission.

same principle, regardless of transmission type.

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Mar 29, 2013 | 12:22 PM

#19

mishar

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Joined: Nov 2010

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From: Vancouver, Canada

Of course. It was just a little poke.

If it is ATF it shouldn't be red. If it is middle differential oil there is a possibility that breather (similar to that blue one at the gearbox) is blocked and that under long highway speeds pressure build up and squeezed some oil out trough the seal. Now stopped because it is not under that much stress.

"Repairing" cars online is not that easy task.