Locate a convenient recycling or disposal site and call to ask how to contain and document used antifreeze. Your state’s Department of Waste Management website will list guidelines and centers for recycling or disposing of antifreeze. Find a hazardous waste or recycling facility. Cloudiness, a strong smell, or particulate matter means must change the antifreeze. Even a tiny amount of oil or gas will ruin antifreeze. This may indicate a problem with the head gasket and should be checked by a mechanic immediately. While the radiator cap is off, also look for any oily film on the surface of the antifreeze. Read on to learn the safest method for how to check and dispose of old antifreeze. Testing, disposing of, and changing your car’s coolant isn’t hard, but it does require knowledge of your engine as well as recycling and hazardous waste laws in your area. Most car manufacturers recommend changing antifreeze every 30,000 to 60,000 miles (check manufacturer’s guidelines or ask your dealership for recommendations for your model).
RELATED: 8 Easy Ways to Winter-Proof Your Car Even brands marked “non-toxic” or “less toxic” should be disposed of using the safest practices for handling hazardous waste. The main ingredient in antifreeze is usually ethylene glycol, which also acts as a lubricant and anti-corrosive agent-a toxic chemical that cannot be poured down the drain, toilet, sewer, or thrown in the trash. Newer cars use a longer-lasting cooling agent, typically 50 percent water and 50 percent antifreeze the addition of plain water to cool your radiator can dilute antifreeze levels below this ideal 50/50 ratio. In older cars, antifreeze can leak, lowering levels and requiring a top-up. Over time, coolant can become overly acidic, leading to engine damage and overheating. Antifreeze (also known as coolant and radiator fluid) is a liquid agent that prevents your engine from overheating in summer and seizing up in winter. Changing your antifreeze is an important part of preparing your car for cold weather.
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