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Antifreeze or Engine Coolant

Q: What is the difference between antifreeze and engine coolant?

A: Antifreeze and engine coolant are commonly used interchangeably. Antifreeze is the actual product that is added to water to make engine coolant. Generally a 50% water to 50% antifreeze is the most common mixture for freeze and boil over protection used in engines. Some antifreeze manufacturers sell premixed solutions.