Many Ann Arbor drivers are wondering, “What is coolant?” Engine coolant is a fluid that transfers heat and regulates the temperature of the engine block and other parts. Whether you drive a new or used car, engine coolant is crucial. Engine coolant contains an additive that ensures that it won’t freeze below 32 degrees Fahrenheit and that it won’t overheat above 212 degrees Fahrenheit. Read on to learn more about how to check coolant levels and when to change yours.
Many drivers overlook the importance of coolant. However, knowing what coolant is can help you appreciate its role in your vehicle’s cooling system. Coolant, commonly known as antifreeze, is a fluid that circulates through a car’s engine cooling system to help regulate its temperature and prevent overheating. It absorbs heat from the engine and transfers it to the radiator, where the heat is dissipated. The cooled fluid is then returned to the engine to repeat the cycle.
As a driver, it’s important to know how to check coolant levels. You don’t have to open the radiator cap to check the level. Instead, check the markings on the side of the reservoir. If the liquid reaches the “full” marking line, you’re good to go. If it doesn’t, remove the radiator cap and add coolant or a 50/50 mix of coolant and water. Read the bottle to see if it’s premixed. It’s also a good idea to inspect the hoses connected to the radiator for any leaks or damage.
Note: If you’re adding more liquid to the cooling system, ensure the engine has cooled first. Additionally, avoid attempting to open the radiator cap while the engine is still hot.
Coolant is thinner than oil but thicker than water. If you notice a sludgy appearance to the liquid, schedule service ASAP. There’s a good chance your car has an internal gasket leak. Driving is possible, but a leaking gasket will cause the coolant to drain quickly. This means the engine is at risk of overheating and potentially suffering severe damage.
Coolant levels deplete over time, so it’s a good idea to check up on the cooling system every three to six months. Usually, the liquid is blue, green, yellow, or red. If it’s brownish or even colorless, flush the system and replace the fluid.
If you have questions about checking your car’s coolant system or encounter any issues, please contact us at Serra Mazda Brighton. You’re also welcome to visit us for in-person assistance. We’re located near Howell and South Lyon. Be sure to check out our current service specials and parts offers.
Q: How do I check the coolant level in my Mazda?
A: To check your coolant, park on a level surface and wait for the engine to cool completely. Locate the translucent plastic coolant reservoir under the hood. The fluid level should be between the ‘MIN’ and ‘MAX’ (or ‘Full’ and ‘Low’) markings on the side of the tank. You do not need to remove the radiator cap to perform a basic level check.
Q: Why is my coolant level low but there are no visible leaks?
A: If you are losing coolant without a visible puddle in your driveway, the fluid may be escaping through a pinhole leak in a hose, a faulty radiator cap, or an internal issue like a head gasket leak. Our Brighton service team can perform a pressure test to locate the source of the loss.
Q: What color should Mazda engine coolant be?
A: Most modern Mazda vehicles use a long-life coolant that is typically green (FL-22) or blue. If your coolant appears brown, rusty, or has a sludgy consistency, it indicates contamination or a breakdown of the fluid’s protective properties and should be flushed immediately.
Q: How often should I have my coolant system serviced in Michigan?
A: While many Mazda models feature long-life coolant, we recommend an inspection every 12 months, especially before the Michigan winter. A full coolant flush is generally recommended every 30,000 to 60,000 miles, depending on your specific model and driving habits in the Brighton and South Lyon area.
*Maintenance instructions are for general informational purposes. Always consult your specific Mazda Owner’s Manual for model-specific requirements and fluid types (such as FL-22).
**Diagnostic fees may apply for cooling system pressure tests. Contact Serra Mazda Brighton at 810-227-1100 for current service pricing and specials.
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