I'm not sure this is common knowledge but the vast majority of cars built in the last 20 years have aluminum cyl heads running. The vast majority of cars built in the last 5 years have aluminum head and block. The coolant manufacturers are well aware of these facts and design their products accordingly. There is nothing special about the metallurgy in a Mercedes engine. Just change out the coolant every 2 years and you won't have anything to worry about.

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CENSORED due to not family friendly words