How Much Coolant Should Be Added to a Car?

[ValerieFitz]

Generally, 4-6 liters of coolant should be added to a car. The functions of coolant are as follows: 1. Anti-boiling: Coolant that meets national standards usually has a boiling point exceeding 105°C, compared to water's boiling point of 100°C. Coolant can withstand higher temperatures without boiling (overheating), meeting the cooling needs of high-load engines to some extent. 2. Anti-freezing: In extremely low temperatures, it ensures the car's cooling system is not damaged by freezing. Commonly used antifreeze typically has a freezing point between -20°C and -45°C, and the appropriate type should be selected based on the actual needs of different regions to meet usage requirements. 3. Anti-rust: High-quality antifreeze can prevent rust in the cooling system. Rust in the cooling system can accelerate wear and reduce heat transfer efficiency. 4. Anti-corrosion: The primary function of coolant is to prevent corrosion. Corrosion is a chemical, electrochemical, and erosive process that gradually damages the metal surfaces inside the cooling system. In severe cases, it can perforate the walls of the cooling system, causing coolant leakage and leading to engine damage.

[LaIsla]

I enjoy doing DIY car maintenance, and last summer I encountered a low coolant warning. After opening the hood, I located the plastic expansion tank, which is positioned on the side near the engine with clear 'MIN' and 'MAX' marking lines. It's best to let the car cool down for a few hours before adding coolant between these two lines, ideally slightly above the middle—neither overfilled to the point of overflow nor too little to cause overheating and boiling. I use a 50% coolant and 50% distilled water mixture, conveniently pre-mixed and purchased from the supermarket for hassle-free use. Overfilling can lead to waste or even damage the seals, causing leaks, so I only pour in about half a bottle at a time and then check the level. Remember to inspect the expansion tank's water level regularly, at least once a month, especially before long trips—this ensures peace of mind during long drives and extends the engine's lifespan. If you notice the coolant level dropping quickly, it's essential to check for minor leaks or a clogged radiator.

[DakotaRose]

As a family car user who frequently takes my kids out, the coolant level is really crucial. I usually check it in the morning when the engine is cold. I pop open the hood and locate the small plastic reservoir labeled for coolant—it has a transparent section where you can see the fluid level. I make sure to fill it to about the midpoint between the 'MIN' and 'MAX' lines. Overfilling can cause the coolant to expand and spill when the engine heats up, while too little may lead to engine overheating, affecting both AC performance and safe driving. I always use dedicated red or green coolant for easy leak detection. Every 5,000 kilometers, I routinely check it to ensure the car stays cool and risk-free. If I notice a significant drop in the coolant level, I stop immediately to inspect—engine overheating and breaking down on the highway would be a nightmare, especially with kids on board. I take extra care to ensure every trip is smooth and worry-free.

[LeAmelia]

I just bought a car not long ago and am still a novice. Last time at the repair shop, I learned about coolant. The mechanic told me to open the hood to see a transparent plastic box, usually located at the front or side, with 'MIN' and 'MAX' indicator lines. When adding coolant, wait until the car has cooled down for at least half an hour, then pour the fluid to the middle level, not exceeding the MAX line or going below the MIN line. I used the vehicle-specific coolant bought from the store, without mixing it with any other liquids. After adding, start the car and drive for a few minutes, then check if the water level stabilizes. If it's too low, there might be a leak or the coolant needs to be replaced.