
The coolant is stored in the engine compartment's antifreeze reservoir, and the location for adding it varies depending on the vehicle model. Engine coolant serves four major functions: cooling, anti-corrosion, anti-scaling, and antifreeze, making it an essential heat dissipation medium for the normal operation of the engine. Coolant provides antifreeze protection in winter and anti-boil protection in summer, safeguarding the engine's cooling system, improving heat dissipation efficiency, and enhancing engine performance. Antifreeze prevents the coolant from freezing and expanding in cold winter conditions, which could otherwise crack the radiator and damage the engine block—hence its full name, antifreeze coolant. Many people believe that antifreeze is only used in winter, but in fact, it should be used year-round.

Last time I changed the coolant myself, I remember it's usually stored in the expansion tank in the engine bay. It's a translucent plastic container, typically labeled with 'COOLANT' or a thermometer icon, quite conspicuous near the engine. The location varies slightly between car models - Japanese cars often have it on the right side, while German cars may place it on the left. When you pop the hood, you can immediately see the fluid level markers with MAX and MIN indicators. Important note: Always wait at least half an hour for the engine to cool before checking - opening the cap on a hot engine risks burns from high-temperature steam. If the coolant is low, only top up with the same color - mixing different formulations can corrode the pipes. It's wise to check antifreeze capability before winter; insufficient freeze protection can crack the radiator. Over the years, I've developed a habit of checking the fluid level every 5,000 kilometers during routine maintenance.

Just helped my neighbor uncle check his old car yesterday, the coolant reservoir is located right above the front wheel. When you pop the hood, it's usually next to the windshield washer fluid tank or battery - a large plastic container with colored liquid. There'll be clear markings like "COOLANT" or "ENGINE COOLANT" on the tank, some cars use a wavy line symbol instead. Remember three things when checking: only operate when engine is cold, maintain fluid level at midpoint, and never force open the cap. Coolant typically comes in green, blue or pink - different colors indicate different formulations. I've seen people use tap water instead, which caused engine overheating. Recommended replacement interval is every 20,000 km (can extend slightly in southern regions). Always choose the correct specification for your vehicle - long-life formulas can last up to five years.

The coolant reservoir is located in the engine bay, made of translucent plastic for easy fluid level inspection. Its exact position varies by vehicle model, typically found near the windshield base—just open the hood to spot the marked tank. The standard fluid level should be around the midpoint, checked most accurately when the engine is cold. Coolant not only dissipates heat but also prevents freezing in winter and boiling over. Top up promptly with the same OEM-specified type if low, as mixing can cause sediment buildup and clog pipes. Conventional coolant requires replacement every two years, while organic long-life variants last up to five years. When adding fluid, never exceed the MAX line to avoid overflow corrosion on adjacent components. Check levels routinely during maintenance, especially during seasonal temperature extremes in summer and winter.


