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E46 (1999 - 2006)
The fourth generation 3 Series (E46 chassis) was introduced in 1999 and set the standard for engineering and performance during it's years of production including being named to Car & Driver's 10 best list every one of those years! ! -- View the E46 Wiki

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  #1  
Old 01-20-2013, 06:31 PM
Fingrassia Fingrassia is offline
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Location: Houston
 
Join Date: Jan 2011
Posts: 19
Mein Auto: 535i sport package, 325CI
Tranny fluid leak at bottom of the pan

Just bought a 2004 325CI convertible. 100K miles
As a long time BMW owner I'm very pleased with this car, but when I changed the engine oil I noticed the bottom of the tranny pan was wet and blowing back on the exhaust.
I'm fairly confident it is tranny fluid.
When I purchased the car I reached underneath the car to check for any leaks after a test drive and there were no noticeable leaks. Unbelievably it is not hitting the driveway or garage floor.
The car was sitting on the BMW dealers lot for around 45-50 days.

Does anyone have any thoughts as to where to start looking for the source of the leak.
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  #2  
Old 01-20-2013, 07:02 PM
QAfred QAfred is offline
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Location: Panhandle of Florida
 
Join Date: Aug 2008
Posts: 919
Mein Auto: 328i, 330ci, R1200C
Make sure it is tranny fluid. Do you have an automatic? If so, I would not drive it long without fixing that- once you confirm. Your description is typically an engine oil leak spreading back across tranny pan.
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Old 01-20-2013, 07:07 PM
Fingrassia Fingrassia is offline
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Location: Houston
 
Join Date: Jan 2011
Posts: 19
Mein Auto: 535i sport package, 325CI
Yes, it is an automatic transmission. I will put it back on the jack stands and verify the fluid.
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Old 01-20-2013, 07:18 PM
QAfred QAfred is offline
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Location: Panhandle of Florida
 
Join Date: Aug 2008
Posts: 919
Mein Auto: 328i, 330ci, R1200C
Oil Filter Housing Gasket (OFHG) or Oil Pan Gasket are two typical suspects.
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  #5  
Old 01-20-2013, 07:34 PM
Fingrassia Fingrassia is offline
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Location: Houston
 
Join Date: Jan 2011
Posts: 19
Mein Auto: 535i sport package, 325CI
Thanks, I will pull the bottom cover off and check the (OFHG).
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