Does Adding Too Much Car Antifreeze Have a Significant Impact?

[SabrinaAnn]

Adding too much car antifreeze has minimal impact. However, when the engine heats up, the excess antifreeze may overflow from the expansion tank due to thermal expansion and contraction, leaving unsightly stains after drying. If it has already overflowed, there's no need to drain it—simply rinse the stains with water. Note that antifreeze should be added when the car is stationary, as adding it when the engine is hot can lead to inaccurate fluid level readings. Functions of antifreeze: 1. Antifreeze protection: In cold winter temperatures, antifreeze contains additives that lower the freezing point of water, preventing the cooling system from freezing in low temperatures. 2. Cooling: The primary function of coolant is to cool the engine. During operation, the engine generates a significant amount of heat, with about 60% of this heat being dissipated through the cooling system to the surrounding environment.