What Are the Reasons for Low Car Coolant?

1 Answers
DeErin
07/29/25 4:30pm
The reasons for low car coolant are: 1. Thermostat failure; 2. Louvers stuck in the fully open position; 3. Fan clutch sintering, electric fan running continuously; 4. Low ambient temperature; 5. Coolant temperature gauge or sensor malfunction. The functions of car coolant are: antifreeze, anti-corrosion, and anti-scale. The steps for adding car coolant are: 1. Unscrew the radiator cap and open the radiator drain valve; 2. Insert a rubber tube into the radiator; 3. Flush the radiator with water; 4. Drain the water and close the radiator drain valve; 5. Pour antifreeze into the radiator filler hole; 6. Tighten the radiator cap and reservoir cap; 7. Start the engine and let it idle for 3 minutes; 8. Top up the antifreeze to the MAX mark.
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