OMG, is that a prank video? I have never in my life seen old coolant like that. I honestly cannot believe that came out of a BMW - plastic, rubber, and aluminum - no way would it be brown like that.
https://youtu.be/g8YZF5cW7-A?t=222


Just me?

If I had that come out, I'd definitely flush repeatedly with water until clear water was coming out, but would also hire an exorcist.

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2001 X5 3.0i, 203k miles, AT, owned since 2014