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      08-26-2021, 07:32 AM   #7
Bc2005
First Lieutenant
United_States
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Drives: 2021 M340i
Join Date: Jun 2021
Location: Virginia

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The older F30 with the N20 engine had issues with leaks/cracks with the thermostat housing. That shouldn’t carry over to the new engine, but the symptoms sound similar.
Appreciate 1