Should Antifreeze Be Added Directly or Should the Old One Be Drained First?

[LeBrady]

Whether antifreeze should be added directly or the old one should be drained first depends on the specific situation. If you are replacing it with the same brand and model of antifreeze, you can add it directly. However, if you are switching to a different brand of antifreeze, you need to thoroughly clean out the old antifreeze from the vehicle before adding the new one. Different brands of antifreeze may have varying production formulas, and mixing them could lead to chemical reactions that may affect the cooling system. The full name of antifreeze is antifreeze coolant, which means it is a coolant with antifreeze properties. It prevents the coolant from freezing during cold winter parking, which could otherwise cause the radiator to crack or damage the engine cylinder block or head due to freezing.