A Rusty Thermostat Is a Leaking Thermostat

C & C Automotive can replace your car, truck, or SUV’s thermostat when it gets too old. The thermostat that was installed when your engine was assembled in the factory will generally last about 10 years. After this time, it is not uncommon for the thermostat to go bad and need to be replaced. We can do that here at our shop. We want to stress the importance of replacing the thermostat as soon as possible to avoid engine damage due to constant overheating. Let’s talk more about this below.


As the title of this blog post explains, a rusty thermostat is a leaking thermostat. The thermostat opens and closes a valve to allow the coolant into the engine. When the thermostat gets old, the valve can get stuck in the closed position. When this happens, the coolant will slowly leak out of the valve and pool around the thermostat housing. Unfortunately, when the liquid touches the metal, it starts to corrode it. As you can imagine, the rust will eventually eat through the metal and leave you with…

Leaking Coolant

Your heart may skip a beat if you back out of the garage and see fluid spots on the garage floor. This can be extremely disconcerting. Check the fluid to see if it is engine coolant. Dab some of the fluid onto a white paper towel or cloth and compare the color with the coolant inside the engine. Do this only when the engine is cold. If the colors match, check the coolant level in the radiator and overflow reservoir. Again, do this only when the engine is cold. A leaking thermostat will reduce the coolant level.

Erratic Temperatures

A leaking thermostat is not the only sign that the thermostat needs to be replaced, however. The thermostat is in charge of reading the engine’s temperature and releasing the coolant at the right time. If you see that your temperature gauge needle is moving up and down erratically while you are driving, this is a sign that the thermostat is unable to read the engine’s temperature correctly. Consequently, it is releasing the coolant at the wrong times and causing erratic temperature changes.

Constant Overheating

Finally, your engine is going to overheat constantly if the thermostat is not working properly. It will also overheat constantly if the thermostat is leaking engine coolant.

Call C & C Automotive in Georgia and South Carolina today so we can schedule a service visit for your automobile to test the thermostat.

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