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      03-26-2020, 10:09 AM   #12
RagtagXMASTER
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Drives: 2013 M6
Join Date: Jul 2018
Location: Boston MA

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Hm I must have misunderstood from the previous posts, sorry about that. If you are losing coolant and you don't see any leaks the only other scenario would be the car is eating it ie blown head gasket, but that is pretty rare on these i believe. most likely you may have a bad hose/line somewhere that is letting the coolant system depressurize and letting the evaporated coolant escape. i think the coolant system should be able to hold around 20 psi or so. I would re check the turbo coolant lines. i never saw mine leak, but once i touched them i saw that one end was already separated off, easy for it to bleed evaporative coolant out.

best of luck finding the issue.
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