Small oil leak / can anyone help identify issue?

JonasRits · 07-28-2023, 05:20 AM

While installing a new front lip I noticed a bit of oil on the underside of the car. After further inspection, it seems to come from the front diff or the turbo oil return line. I've attached some pictures from the underside.

Has anyone had experience with this? Any idea of what the issue can be?
Thanks in advance!

JonasRits · 07-29-2023, 04:44 AM

Car is a 2018 340i xDrive with the B58. Around 70k km - 43k miles.

Stockb587955 · 08-09-2023, 11:47 PM

Looks like a typical oil change mess. I hav the clean that area off everytime I do an oil change as that is where the oil runs off to if you do not catch it all when you remove the filter. Clean it off and inspect again before your next oil change.

Billfitz · 08-10-2023, 07:36 AM

Oil can come from a number of places. As noted above clean it and see if it returns. If it does clean it again and then use UV dye to find the leak. Google youtube videos on how.

07-28-2023, 05:20 AM	#1
JonasRits Registered 0 Rep 3 Posts Drives: BMW 340i xDrive Join Date: Jul 2023 Location: Belgium iTrader: (0)	Small oil leak / can anyone help identify issue? While installing a new front lip I noticed a bit of oil on the underside of the car. After further inspection, it seems to come from the front diff or the turbo oil return line. I've attached some pictures from the underside. Has anyone had experience with this? Any idea of what the issue can be? Thanks in advance! Attached Images
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07-29-2023, 04:44 AM	#2
JonasRits Registered 0 Rep 3 Posts Drives: BMW 340i xDrive Join Date: Jul 2023 Location: Belgium iTrader: (0)	Car is a 2018 340i xDrive with the B58. Around 70k km - 43k miles.
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08-09-2023, 11:47 PM	#3
Stockb587955 Private 29 Rep 70 Posts Drives: 2016 bmw 340i Join Date: Jan 2022 Location: Fresno iTrader: (0)	Looks like a typical oil change mess. I hav the clean that area off everytime I do an oil change as that is where the oil runs off to if you do not catch it all when you remove the filter. Clean it off and inspect again before your next oil change.
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08-10-2023, 07:36 AM	#4
Billfitz Lieutenant General 8318 Rep 16,199 Posts Drives: '15 328iX GT Join Date: Jan 2015 Location: New Hampshire iTrader: (0)	Oil can come from a number of places. As noted above clean it and see if it returns. If it does clean it again and then use UV dye to find the leak. Google youtube videos on how.
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