Understand Your Vehicle's Cooling System

If you've ever popped the hood of your car and noticed the coolant level is low, you might wonder why. The cooling system is crucial in keeping your engine from overheating, but a low coolant level could indicate a problem or just be a normal part of vehicle maintenance. Let's break down the possible reasons and what you should do about it.

Your car's cooling system is designed to keep the engine at an optimal temperature. It circulates a mixture of water and antifreeze (coolant) through the engine to absorb heat and then releases that heat through the radiator. The coolant reservoir, often called a degas bottle, acts as an overflow tank where the coolant expands and contracts as it heats up and cools down.

While this system is mostly sealed, allowing minimal evaporation, some coolant loss over time can happen. This is because the coolant contains water, which can evaporate. But if your coolant is consistently low, it might point to a larger issue.

Potential Causes for Low Coolant

1. Evaporation: Even though the system is sealed, some evaporation is normal over time, especially if the coolant mix isn't perfectly balanced.

2. Leaks: If the coolant level keeps dropping, you might have a leak. Look for visible signs like puddles under your car, especially after it's been parked for a while. Coolant can leak from several places, including the hoses, water pump, or radiator.

3. Heater Core Issues: If your heater isn't working well, it might be due to low coolant levels since the heater uses the same coolant to warm the air. You might even hear a gurgling noise as the coolant rushes through the heater core.

4. Engine Wear and Tear: Over time, parts of the cooling system like the radiator, water pump, or hoses can wear out and start leaking.

5. Sweet Smell: Coolant has a sweet smell. If you detect this inside or outside your vehicle, even without visible leaks, it could be a sign of a coolant leak starting to develop.

Safety First: Checking Your Coolant

Never open the coolant cap when the engine is hot. The system builds up pressure, and releasing it suddenly can cause severe burns. Always check the coolant level when the engine is cool, ideally first thing in the morning before you’ve started the car.

If you're concerned about your coolant level or haven't had your cooling system checked recently, it’s wise to bring your vehicle in for a thorough inspection. Regular maintenance is key to avoiding costly repairs down the road.

How Often Should You Service Your Cooling System?

According to our maintenance plan at Wayside Garage, we recommend servicing your cooling system every three years or every 30,000 miles, whichever comes first. This service includes checking the coolant pH, ensuring proper freeze protection, and flushing the system to remove any buildup that could clog your engine's vital components.

Keeping up with regular maintenance will help ensure your car stays in peak condition and prevent minor issues from becoming major repairs.

Schedule Your Cooling System Service Today!

If your coolant level is low or it's been a while since your last cooling system service, don't wait. Call us at (831) 899-2425 to schedule an appointment. Our ASE-certified technicians will perform a comprehensive inspection and service to keep your vehicle running smoothly.