![]() If the coolant gets too bad, it can cause rust and corrosion inside the system, which can lead to clogs in the cooling ports and/or hoses. Waiting too long to change your engine coolant can lead to the coolant breaking down and not being able to provide proper engine cooling. What Happens If You Don’t Change The Engine Coolant?Įngine coolant draining from under the car. Once the coolant stops flowing, close the valve and refill the radiator.Ī coolant flush is another version of an engine coolant change, but instead of relying on gravity to drain the coolant, you pump water through the entire system flushing out the engine block, heater core, and hoses. The easiest way is simply a drain and fill where you open the valve on the bottom of the radiator and let gravity drain as much of the coolant out as possible. There are two ways you can go about changing the engine coolant. Like an oil change, replacing your engine’s coolant keeps it running smoothly. In the image below, you can see the coolant inside the engine block as well as cylinder number one. An engine coolant change replaces the old coolant with new coolant to keep your engine running at the proper temperature. Over time, the coolant degrades, which not only affects the ability to keep the engine in the proper temperature range, but it also can cause corrosion or excessive wear on the rest of the system including the hose. ![]() There are other components such as the thermostat and heater core, as well. In its simplest explanation, the coolant system consists of the radiator and water pump, which takes hot coolant from the engine, cools it down and then returns it to the engine. The engine’s coolant system consists of the radiator (pictured here with the cap off) and water pump.Įngine coolant is the fluid used to prevent your engine from overheating. When in doubt, refer to your owner’s manual. Keep in mind: Always use the proper coolant that is recommended for your vehicle. Always dispose of the used coolant in an environmentally friendly manner. You can save a lot of money by replacing the coolant or flushing the coolant system by yourself. ![]() Either way, this job is critical to keeping your engine healthy and running for a long time. Replacing the engine coolant (or antifreeze) is a very easy job, although flushing the entire coolant system can be a little trickier for a DIYer. Get a more accurate estimate for your engine coolant change using RepairPal’s Fair Price Estimator For a more accurate estimate based on your make, model, and location, use the RepairPal Fair Price Estimator. Related repairs or maintenance may also be needed. This price range is based on national averages for all vehicles and does not factor in taxes, fees, or your particular make and model. The Average Coolant Change Cost Is $98-$123 at the Mechanic, versus $20 to DIY. ![]()
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