What happens if too much antifreeze is added?

1 Answers
AubreeMarie
07/30/25 5:40am
If too much antifreeze is added, causing the overflow tank to become full, it may spill out from the overflow port or the one-way valve on the screw cap. Adding antifreeze slightly above the upper limit is not a problem, but if the overflow tank is completely filled, the liquid may be expelled when the cooling system heats up and expands. Below is some related information about antifreeze: 1. Antifreeze concentrate is added to the radiator water to turn it into a mixed solution, lowering the freezing point and making it less prone to freezing. 2. The boiling point is also relatively increased, which reduces water evaporation in summer and enhances the engine cooling effect. 3. Antifreeze concentrate has anti-corrosion properties, preventing radiator corrosion and also lubricating the water pump bearings.
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