What to Do When the Coolant Level in the Car is Low?
2 Answers
When the coolant level in the car is low, it needs to be replenished promptly. It is recommended that car owners regularly check the coolant level. If the coolant is below the minimum mark, it indicates a deficiency. The coolant should be of the same brand and model as the original. If a different brand or model is used, the original coolant must be completely drained before adding the new one, as different brands and models may have varying formulations. The full name of coolant should be antifreeze coolant, meaning it has antifreeze properties. It prevents the coolant from freezing in cold weather, which could otherwise crack the radiator or damage the engine block. Coolant is not just for winter use; it should be used year-round. As part of regular vehicle maintenance, the engine coolant should be replaced annually.
If I notice the coolant level is low, I take it seriously right away because the cooling system protects the engine from overheating. The first step is to let the car cool down completely—wait at least an hour before doing anything, as opening the hood on a hot engine could cause burns or high-pressure fluid spray. Then, I check the coolant reservoir's level. If it's below the 'min' mark, it needs topping up. But I never use plain water or mix different brands of coolant—only the manufacturer-recommended pre-mixed coolant, usually a 50% blend of distilled water and antifreeze, to prevent corrosion or freezing. After adding, I start the engine for a few minutes to circulate it and check if the dashboard temperature gauge reads normal. I also inspect for leaks, like dampness around hose connections, colored fluid drips under the car, or cracks in the expansion tank. Checking the coolant level every three months helps avoid sudden issues. If it keeps dropping frequently, I stay alert for potential leaks and get it checked professionally—ignoring it risks engine overheating and total system failure, so safety-first handling is a must.