Which of the listed effects would mixtures of ethylene glycol and phosphate compounds have on the metal surfaces of the cooling system of a diesel engine?

Correct Answer: Option A — Protects metallic surfaces from corrosion and the coolant from freezing

In USCG Motor Plants (Diesel Engineering), regarding 'Which of the listed effects would mixtures of ethylene glycol and phosphate compounds have on the metal surfaces of the cooling system of a diesel engine', the correct operational principle is: 'Protects metallic surfaces from corrosion and the coolant from freezing'.