How Much Antifreeze is Appropriate?
2 Answers
Antifreeze should be filled between the L and M marks. The following is an introduction to the functions of antifreeze: 1. Anti-corrosion: The engine cooling system contains five types of metals, namely cast iron, aluminum alloy, steel, copper, and solder used for welding the radiator. Antifreeze is in constant contact with these metals, so it must have anti-corrosion properties. Poor-quality antifreeze can cause severe corrosion to metals. Some radiators experience cracked welds and leaks when using antifreeze due to severe corrosion of the solder by the antifreeze. High-quality antifreeze, compared to water, provides better protection for the radiator and extends the engine's lifespan. 2. Anti-scaling: Many drivers drain the antifreeze in summer and replace it with tap water, which contains many minerals. When heated and evaporated, these minerals form scale deposits on metal surfaces. If scale forms inside the radiator, it will affect the heat dissipation efficiency, leading to overheating and 'boiling.' High-quality antifreeze is made with distilled water and contains anti-scaling additives, so it does not produce any scale.
Checking the coolant level is quite simple. Every time I wash my car, I casually pop open the hood to take a look. The translucent plastic reservoir has MIN and MAX indicator lines on the side. When the engine is cold, the fluid level should be maintained slightly above the middle. If it's significantly below the MIN line, you need to promptly top it up with the same color coolant. Last winter, I neglected my car's low coolant level, and the engine almost froze and cracked. Never open the cap when the engine is hot—the pressure can cause scalding spray. If you regularly park in a garage and notice pink or green water stains on the ground, there's a high chance the cooling system is leaking, and this needs immediate repair. By the way, coolant should be completely replaced every three to four years; otherwise, corrosion in the radiator can lead to costly damage.
