Um, did you read the link? They are using the term anti-freeze to indicate any substance which lowers water's freezing point, such as the alcohol they add to windshield wiper fluid. That is why, right next to that photo, it said "In automotive windshield-washer fluids, an alcohol (e.g., methanol) is usually added to keep the mixture from freezing; it also acts as a solvent to help clean the glass."

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1968 220D, w115, /8, OM615, Automatic transmission.
My 1987 300TD wagon was sold and my 2003 W210 E320 wagon was totaled (sheds tear).