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something doesn't sound right though. Had the car always been maintained at a BMW dealership? I'm pretty sure the dealership coolant will be all-weather for NA. I doubt the dealership is mixing coolant concentrate.
Or can anyone who know dealership operations confirm? BMW probably sells coolant concentrate for dealerships who service cars in colder regions so they can actually mix it, but I'm going to bet, US dealers aren't doing it and using the premixed stuff off the shelf.
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