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      04-23-2026, 12:24 PM   #1
zcp312
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Drives: 2011 E90 M3
Join Date: Oct 2020
Location: Illinois

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Coolant Leak - reservoir expansion upgrade?

Got a coolant leak at the track yesterday and wondering if anyone upgraded their tank to the turner or moroso/bimmerworld expansion tanks?

Only saw one post on this from 2023, anyone else think an upgrade is worth it for temp control or the stock one performs fine?

Thanks
Appreciate 1
PAM3Guy984.50