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3-Series (E46, E90) Chat relating to the BMW 3-Series from 1999 to Current. Models include: BMW 316i, BMW 318i, BMW 318Ci, BMW 320i, BMW 323i, BMW 325i, BMW 330i, BMW 328 Ci, BMW 328i, BMW 325i/xi, BMW 330Ci, BMW 320d, BMW 330d, BMW 335d.

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Old 12-24-2011, 07:29 PM   #1 (permalink)
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Help leaking mustard colored fluid

I have a 2004 bmw 325i that is leaking a mustard colored fluid from the engine...dunno the source but its obviously something that is mxing possibly oil/coolant or trans fluid/oil or trans/coolant...anyone know? my coolant light comes on whenever i turn on my heat and i get burning smell sometimes outside the car. could this all be related?
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Old 12-25-2011, 02:47 AM   #2 (permalink)
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Sounds very much like rusty water. Coolant is usually orange or blue and I doubt you would have rust in the windscreen washer bottle. I would check that the radiator or coolant pipes are not leaking/damaged/loose/clamps loose. Might also be corrosion in your heater radiator
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Old 12-25-2011, 09:51 AM   #3 (permalink)
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Whats the mileage? Hope its not what I think it could be?!! (Head Gasket)
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Old 12-25-2011, 09:34 PM   #4 (permalink)
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mileage is 105k....the car has never overheated on me tho...u had the thermostat replaced 2 yrs ago ....u hope its not the head gasket...its running fine tho
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Old 12-25-2011, 11:42 PM   #5 (permalink)
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Originally Posted by aern05 View Post
mileage is 105k....the car has never overheated on me tho...u had the thermostat replaced 2 yrs ago ....u hope its not the head gasket...its running fine tho

Why not start off by flushing the radiator thoroughly and make a note of what comes out.

You could also have a look in the expansion tank to see what colour the water is. If it matches what you saw dripping out, then there is your problem. I agree with the post about the head gasket, but there should be secondary results like missing, or uneven running. Best to try the easy (and cheap) things first.
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Old 12-26-2011, 08:58 AM   #6 (permalink)
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Totally agree...
Remove the engine breather pipes too, I bet they're gunked up !!
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