What is the shelf life of car antifreeze?
2 Answers
Car antifreeze has a shelf life of two years, and its functions are: 1. To provide freeze protection for the engine against low-temperature environments; 2. To prevent the coolant from freezing and cracking the radiator or damaging the engine cylinder block and cylinder head when the car is parked in cold winter; 3. To provide efficient heat dissipation. The full name of antifreeze is antifreeze coolant, which is a coolant with antifreeze properties. It is categorized into: ethanol-based, glycerol-based, and ethylene glycol-based. Antifreeze should be replaced approximately every 2 years or 60,000 kilometers. Failure to replace it for a long time can lead to a decline in the quality of the antifreeze, reducing its internal anti-corrosion properties and causing damage to the radiator and pipes.
Unopened car antifreeze stored in a warehouse typically lasts between two to five years, depending on the brand and type. Regular formulas last about three years, while long-life versions can endure up to five. However, once poured into the vehicle, the situation changes due to exposure to high temperatures and engine corrosion. Experienced drivers recommend replacing it every two years or every 30,000 to 40,000 kilometers. I once delayed replacement, resulting in excessive acidity that corroded the radiator, leading to costly repairs. It's best to test the freezing and boiling points during seasonal changes—tools are easily available online, making it simple to stay worry-free. Regular maintenance is better than waiting for a breakdown; don’t let small issues become major problems. Safety first!
