Losing coolant from where? B58

Beast.58 · 04-10-2024, 05:08 PM

Hello guys I’ve been paying attention weekly to my coolant reservoir and I’ve noticed the big tank going lower and lower. Got me looking around and all I see that points to a leak is what seems to be dried up coolant on hoses under the oil filter housing side. (Pictures attached) Where could this coolant be coming from and what should I be replacing ?
Anywhere else I should be looking? Car is a 2019 bmw 540i with 54k miles. Thank you all!

RonronEG · 04-10-2024, 06:54 PM

Leaking coolant on the filter housing side sure sounds like the seals in the oil filter housing/oil cooler may have failed.

Check out Kern417's video about it here (every B58 owner should be sub'd to this guys YT channel, btw):

Beast.58 · 04-11-2024, 01:23 AM

Thanks ronronEG ! That is the location I’m leaking in so I guess I’ll go ahead and replace that and all cooling components around with OEM hoses and gaskets. Maybe try the metal housing upgrade? Does anyone have any input on that ?

04-10-2024, 05:08 PM	#1
Beast.58 Registered 0 Rep 3 Posts Drives: 2019 BMW 540i Join Date: Apr 2024 Location: California iTrader: (0)	Losing coolant from where? B58 Hello guys I’ve been paying attention weekly to my coolant reservoir and I’ve noticed the big tank going lower and lower. Got me looking around and all I see that points to a leak is what seems to be dried up coolant on hoses under the oil filter housing side. (Pictures attached) Where could this coolant be coming from and what should I be replacing ? Anywhere else I should be looking? Car is a 2019 bmw 540i with 54k miles. Thank you all! Attached Images
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04-10-2024, 06:54 PM	#2
RonronEG Lieutenant 336 Rep 471 Posts Drives: BMW 540i Join Date: Dec 2020 Location: Northern California iTrader: (0)	Leaking coolant on the filter housing side sure sounds like the seals in the oil filter housing/oil cooler may have failed. Check out Kern417's video about it here (every B58 owner should be sub'd to this guys YT channel, btw):
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04-11-2024, 01:23 AM	#3
Beast.58 Registered 0 Rep 3 Posts Drives: 2019 BMW 540i Join Date: Apr 2024 Location: California iTrader: (0)	Thanks ronronEG ! That is the location I’m leaking in so I guess I’ll go ahead and replace that and all cooling components around with OEM hoses and gaskets. Maybe try the metal housing upgrade? Does anyone have any input on that ?
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