Quote:
Originally Posted by MDM
This doesn’t surprise me at all… However that is not the only place it can leak from as I found out about four months ago my charge coolant expansion tank had to be replaced because I had a slow leak although I saw no evidence or could smell anything either which was extremely odd. I just knew it was leaking internally. All is good now :-) sidenote, both my charge cooling expansion tank and engine block coolant expansion tank have been replaced one each. 2016 M4
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One of my buddies brand new M3 comp pack had same issue ~ 9941miles on a 2017 model. He's getting is replaced under warranty