What are the functions of automotive antifreeze?
3 Answers
The functions of automotive antifreeze include: 1. Providing freeze protection for the engine against low-temperature environments; 2. Preventing the coolant from freezing and cracking the radiator or damaging the engine cylinder block and cylinder head when the vehicle is parked in cold winter conditions; 3. Delivering efficient heat dissipation. Automotive antifreeze, also known as coolant, contains substances that lower the freezing point of water to ensure the cooling system remains functional during cold weather. The composition of automotive antifreeze includes inorganic substances like calcium chloride, and organic substances such as methanol, ethanol, ethylene glycol, glycerol, lubricating oil, and purified water.
Hey, speaking of antifreeze, I've learned my lesson the hard way. Last winter at minus fifteen degrees Celsius, I couldn't start my car to go to work because the engine was frozen. After checking, I found out it was due to insufficient antifreeze. It not only prevents freezing by lowering the freezing point but also prevents boiling by raising the boiling point during high summer temperatures, protecting the engine from overheating and seizing. Additionally, it lubricates the water pump to prevent jamming and prevents corrosion to keep metal parts from rusting. I once tried using pure water, but it resulted in scale buildup that clogged the cooling system, costing me a fortune in repairs. Now, I change branded antifreeze every six months to extend the engine's life—safety first.
Antifreeze isn't just for winter – after years in auto maintenance, I've learned its core function is maintaining cooling system balance. Chemically, its ethylene glycol formula lowers freezing points while raising boiling points, ensuring engine operation from sub-zero to extreme heat. Corrosion prevention is key, protecting aluminum and iron components from rust that shortens engine life. It lubricates water pumps to reduce friction wear, plus prevents scale buildup for clear passages. Choosing organic formulas over traditional ones increases longevity. Regular checks of fluid levels and color changes can save money by preventing roadside breakdowns.
