How to Deal with Insufficient Car Coolant?
2 Answers
If the coolant level is below the minimum line at normal temperature, you can add coolant. When adding, ensure the level does not exceed the maximum mark, as the coolant expands when hot due to thermal expansion. If the coolant level decreases over two years, there is no need to replace it; you can simply continue to top it up. The added coolant should have the same composition as the existing coolant. Here are some related points: 1. Note: Do not use water as a substitute unless absolutely necessary. In emergencies where coolant is unavailable, you can use soft water, such as purified water. Hard water can form scale at high temperatures, which, like in a household kettle, can clog the water jacket over time. 2. Coolant: Coolant consists of water, antifreeze, and additives. Based on the antifreeze component, it can be classified into types such as alcohol-based, glycerol-based, and ethylene glycol-based coolants.
I saw the coolant warning light come on and immediately pulled over to let the engine cool down for half an hour. Recalling that the fluid level was low during the last maintenance, I opened the hood to check the overflow tank and sure enough, it was below the Min line. Keeping calm, I first grabbed a spare bottle of coolant from the car and topped it up to the midline, making sure it was the same color to prevent corrosion. Then I started the engine to listen for any unusual noises. Over the next week, I checked the garage floor for any signs of leakage and found a small crack. I took it to the repair shop, where they replaced a hose, and that fixed the issue. I’ve made it a habit to visually check the fluid level every month and have the system thoroughly cleaned by a mechanic during seasonal maintenance. This keeps the engine temperature stable and gives me peace of mind on long trips. Never ignore warnings—otherwise, a major repair could cost a fortune, and dealing with a tow truck is just extra hassle.