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  1. 2nd Gen. 1&2 Series (2011-2021 | F20,F21,F22,F23)
    can air trapped in the system cause coolant to disappear? I previously had the overheat warning came up without any low coolant warning at all and found out the tank was empty. I didn't know about bleeding or anything as I was at the highway and panicked so I just poured in distilled water...
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