Will adding too much antifreeze have any impact?

[Gray]

Adding too much antifreeze can have negative effects, which include: during vehicle operation, thermal expansion may cause it to overflow through the pressure relief valve, leaving stains. The functions of automotive antifreeze are: to prevent the coolant from freezing during cold winter parking, which could crack the radiator or damage the engine cylinder block or head. The method for replacing antifreeze is: 1. Unscrew the radiator cap to drain the old antifreeze; 2. With the engine idling, inject clean water until clear water flows out from the radiator; 3. After all clean water has drained, close the water valve; 4. Add new antifreeze until the liquid level is between the MAX and MIN marks; 5. Replace the cap and let the engine idle for two to three minutes.