How Long Do Car Thermostats Last?

March 14, 2024

Your car's thermostat is a small but important part of your vehicle's cooling system. It regulates the flow of coolant to ensure your engine never runs too hot or too cold, ensuring optimal performance and extending its lifespan.

The thermostat works by opening and closing, allowing coolant to pass through the engine while it's running. When the engine reaches its operating temperature, the thermostat closes again to prevent overheating. A malfunctioning thermostat can be the cause of overheating or a frozen engine that won't start.

Car thermostats last a long time but will eventually fail. They're susceptible to various factors, including driving conditions and the type of coolant used. They also depend on a spring to open and close, which can weaken over time due to contamination. If the spring fails, the thermostat may remain stuck in the open position, trapping coolant in the engine and preventing it from reaching its proper temperature.

Thermostats are cheap to replace and should be a priority on every car owner's list of maintenance items to keep up with. A faulty thermostat can significantly reduce your fuel efficiency and make your car less reliable, not to mention costing you more at the pump. A failing thermostat can also lead to carbon build-up inside your engine, serious dilution of your motor oil, and poor performance when it comes to producing power. By prioritizing regular maintenance, understanding your thermostat's lifespan and recognizing signs of potential failure, you can protect your engine from overheating and extend its lifetime.


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