What is the correct method for adding coolant?
4 Answers
Correct steps for adding antifreeze to a car: 1. Add antifreeze from the radiator filler port until the radiator is full. Unscrew the reservoir cap, add antifreeze up to the "Max" mark, being careful not to exceed it. 2. Replace and tighten both the radiator cap and the reservoir cap. 3. Start the engine and let it idle for 2-3 minutes, then open the radiator cap. As some air is expelled from the cooling system, the antifreeze level will drop. At this point, add more antifreeze until it reaches the "Max" mark again. 4. Securely close the radiator cap.
I know this very well! Adding coolant isn't as simple as just pouring it in. First, you need to locate the correct spot. With the engine cold, find the translucent expansion tank next to the radiator, marked with Min and Max level lines on the side. Always use a cloth to protect against burns when unscrewing the cap. Slowly add new coolant until it's about 1 cm below the Max line—don't fill it completely. Here's the key step: After adding, start the engine and let it idle for 10 minutes to allow full circulation of the cooling system. The level will drop, so remember to top it up to the midway point. It's best to use the factory-recommended coolant color—mixing different colors can cause scaling and clog the waterways. For safety, check the coolant level and freezing point annually before winter.
Just helped the neighbor's kid with this last week. It's actually three simple steps: wait for the engine to cool completely, locate the white plastic coolant reservoir, and fill it with dedicated coolant to the marked level. The most common mistake is pouring too fast right after unscrewing the cap, causing overflow that damages the paint. Add it slowly, letting the liquid seep into the pipes before adding more. Bleeding air from the system by running the engine is crucial—watch the dashboard until the temperature gauge reaches normal, then feel both upper and lower radiator hoses to confirm they're warm. I always keep a bottle of distilled water in the trunk for emergencies; it can be mixed in if you're caught with overheating and low coolant.
Just remember four key points: First, use the correct fluid—don't mix green and blue. Second, perform the operation when the engine is cold. Third, check the scale and don't overfill. Fourth, you must bleed the air. Doing it in your own garage is most convenient. A bucket of coolant costs about 50 yuan and lasts two years. After topping up, drive a short distance, then check again the next day when the engine is cold for the most accurate reading. If you notice any leaks, repair them promptly, or else overheating could lead to expensive engine repairs.
