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Old 07-05-2003, 02:16 PM
500sl's Avatar
testing testing
Join Date: Jun 2003
Location: Southern Cali
Posts: 29
Transmition Oil Leak

I think I have aminimal leak of transmisdsion fluid. It leaks for about a day or two after fill up then stops. Mechanic says the leak isn't detremental because its very little. However, I like to maintain a oil free garage. Can someone suggest a quick fix to this? Is there a liquid additive that can seal the small leak? thanks in advance
"In the End, we will remember not the words of our enemies, but the silence of our friends"

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Old 07-05-2003, 09:56 PM
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Join Date: Feb 2001
Location: Colleyville, TX
Posts: 225

Is it leaking from the pan area ?? If it is, then empty some tranny fluid and you should be fine. I had a similar leak on my 400E because I overfilled it. It stopped after I emptied about 1/2 quart. Hope this helps.

93 400E
86 BMW 325E
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Old 07-05-2003, 10:06 PM
dmorrison's Avatar
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Join Date: Dec 2002
Location: Colleyville, Texas
Posts: 2,694
Don't add "leak fixers". Your tranny has a lot of very small orafices that must work properly. If a "leak stop" stops a small leak then it will stop the oriface that is supposed to be there.
Either drain the fluid and fill it properly to make sure your tranny is not overfilled. Could you have overfilled it???
or find the leak and fix it. If its the oil pan gasket then replace it and while your at it change the filter, since you'll have the oil pan off anyway.
It could also be a seal around the modulator valve or any other seal. Have it taken care of correctly. Trying to "rig" a fix can wound up becoming a very expensive transmission overhaul.

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