Is this a coolant leak and should I be concerned?

mehrlovin · 05-14-2022, 01:33 PM

I noticed between this Spring and last summer I had lost some coolant so I topped it off and found this potential leak. I think its coolant but I am not certain. Its on the front left bottom of the engine bay. It appears to be a rubber hose connected to a plastic downpipe. Its not related to the AC as the weeping occurs even if the AC is off. Wondering if I should wrap the rubber hose and just leave it or use radiator stop leak.

Any info appreciated.

TGTIW · 05-16-2022, 03:51 PM

Number 1 - Don't use stop leak.
It's bit hard to tell from the photo, it looks like the lower radiator hose. The o-rings in the connections go bad over time. It's a pretty simple job to replace it.

mehrlovin · 05-17-2022, 10:52 PM

Ahh that explains it. Thanks for the info!

05-14-2022, 01:33 PM	#1
mehrlovin Private 11 Rep 62 Posts Drives: 2007 328xi E90 Join Date: Sep 2019 Location: Vienna, Virginia iTrader: (0)	Is this a coolant leak and should I be concerned? I noticed between this Spring and last summer I had lost some coolant so I topped it off and found this potential leak. I think its coolant but I am not certain. Its on the front left bottom of the engine bay. It appears to be a rubber hose connected to a plastic downpipe. Its not related to the AC as the weeping occurs even if the AC is off. Wondering if I should wrap the rubber hose and just leave it or use radiator stop leak. Any info appreciated. Attached Images
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05-16-2022, 03:51 PM	#2
TGTIW Second Lieutenant 143 Rep 258 Posts Drives: 2010 328i Join Date: May 2013 Location: Knoxville iTrader: (2)	Number 1 - Don't use stop leak. It's bit hard to tell from the photo, it looks like the lower radiator hose. The o-rings in the connections go bad over time. It's a pretty simple job to replace it.
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05-17-2022, 10:52 PM	#3
mehrlovin Private 11 Rep 62 Posts Drives: 2007 328xi E90 Join Date: Sep 2019 Location: Vienna, Virginia iTrader: (0)	Ahh that explains it. Thanks for the info!
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