Learn how to test and maintain your car's coolant system to prevent engine damage and ensure proper heating. Discover the correct antifreeze-to-water ratio, how to test coolant effectiveness, and techniques for bleeding air from the system. Master the process of draining the radiator, adding new coolant, and adjusting the antifreeze concentration. Gain insights on freeze plugs, essential tools, and products for coolant maintenance. Follow step-by-step instructions to properly test, top off, and maintain your car's cooling system, preventing overheating and engine block freezing or corrosion.