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09-01-2018, 09:09 PM | #1 |
Second Lieutenant
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What is this leak?
Today I removed the underneath engine cover and found a sign of leak (Picture 1) . Trace it down and found the stain on the lower part of the coolant hose from the bottom (Picture 2). There is also light stain can be seen from the top on the coolant hose (Picture 3). The leak is hard to tell oil or coolant fluid. I carefully checked around and could not find the source. it is not the famous oil cooling housing (Picture 4)
What it would be?
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2011 535i xDrive Black/Black, Michelin PS AS 4
2014 435i RWD Convertible Service Manual: www.newtis.info Part: http://www.realoem.com |
09-02-2018, 10:42 AM | #2 | |
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09-02-2018, 03:56 PM | #3 |
Major General
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Is it engine oil? Could be the seal on your intercooler piping allowing small amount of oil and air to escape.
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09-03-2018, 06:45 AM | #4 |
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Looks like oil filter housing to me.
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09-03-2018, 09:49 PM | #5 |
Second Lieutenant
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The oil filter housing is clean (picture 4).
I cleaned them up and will take a good look next time.
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2011 535i xDrive Black/Black, Michelin PS AS 4
2014 435i RWD Convertible Service Manual: www.newtis.info Part: http://www.realoem.com |
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