Thread: Low coolant
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      12-05-2019, 07:19 PM   #14
Opie55
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Drives: '15 650i Convertible
Join Date: Apr 2018
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And also, I'm still confused. That small front reservoir cools two things - your two engine computers and the charge air coolers - not the turbos themselves. And it has no level sensor. It's a low temp system. So it must be your main reservoir that is low. Of course now it will be really low since they left it open.