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      01-28-2024, 12:11 PM   #80
M5_Raz
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Drives: BMW M5
Join Date: Aug 2020
Location: Bay Area, California

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What Rick said. You can get the coolant from the dealership and the distilled water from a grocery store.

Use a chart like this to determine your mixture for your lowest temperature of the year. Note: the more water you have the better cooling it will provide.

I will be going 70 water / 30 coolant at my next change.
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