06-06-2021, 05:38 PM | #1 |
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coolant reservoir leak
PSA. 2015 228i 85k miles. my coolant level sensor leaked and the reservoir needs to be replaced. should have done it when I did the coolant swap/water pump/thermostat job. just a heads up for peeps with higher miles.
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06-06-2021, 06:11 PM | #2 |
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Not really relevant, but Doug Demuro on today's video mentioned the same problem on his new Land Rover Defender, coolant reservoir had a small leak.
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06-06-2021, 06:15 PM | #3 | |
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wonder if there's anything I can do with the new one to make the seal better. jb weld, o ring ... something |
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06-06-2021, 06:23 PM | #4 |
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85,000 miles is a pretty good run.
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06-06-2021, 06:41 PM | #5 |
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...when it comes to BMW cooling system components.
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06-07-2021, 09:25 AM | #6 |
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Reservoir R&R
On a E90 I had the tank split at 125K miles. So at 70K on the M235i I had the tank removed to gain access to Turbo Inlet duct (and WP/Thermo R&R) and realized just how yellow and full of crud the tank was & ordered a new replacement. I want to say $125 from ECS. Plus I was following the "Wrench Lab" Mega-build and he replaced his due to the same issue.
Surprised at how much better the engine bay looks with that new tank and new blue fluid after the WP/Thermo replacement. Not sure that the tank typically fails at 85K miles but if you plan on keeping the car long term -- all the plastic parts on the turbo side of the car are prone to heat failure and it is a good idea to R&R. |
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06-08-2021, 03:19 AM | #7 | |
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06-09-2021, 06:14 PM | #8 |
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it was my fault I screwed this one up. YES I saw coolant mineral deposits at the connector and ASSUMED that was the leaker.
in actuality, I had replaced my OFHGs in October-ish and (I guess) forgot to reinstall the hose clamp on the coolant line to the oil cooler. it made quite the sound when I started the coolant bleed procedure and heard a waterfall in my garage! I'm still probably better off with the new reservoir from the sound of things! |
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