How To Flush A Vehicle's Coolant System

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Your car's coolant system is essential to the efficient functioning of the entire vehicle. Over time, the liquid within your coolant system can become contaminated with dirt and other substances, reducing its effectiveness and increasing the likelihood of your engine overheating. In order to prevent this from happening, you should flush your system at least once a year and refill the coolant system. Thankfully, this is a fairly simple process that you can complete at home with the right tools and know how.

Before You Begin

You'll need a two gallon bucket, sealable containers, replacement antifreeze and water, all of which are available at most hardware or automotive stores if you don't already have them at home.

Make sure that your car has not been running for at least a few hours before you start working on it, as the coolant and engine system will be very hot if the car has just been turned off.

Flushing the Coolant System

Place the bucket underneath the drain valve of your radiator. The drain valve is located on the bottom of your vehicle, directly underneath the radiator.

Open the drain valve and let the coolant drain into the bucket. This can usually be done by simply twisting the valve counterclockwise with your hand.

Once the liquid has stopped draining, screw the drain valve back in. Remove the bucket from underneath your car, and pour the coolant into the sealable containers for later disposal.

Fill the coolant system with water, and turn the car on. Let it run for a few minutes, keeping your eye on the temperature gauge to ensure that it does not overheat.

Then, turn the car off and let it sit for a few minutes to cool down. Then, drain the water out as you removed the previous coolant. Doing this cleans out any remaining dirt or grime in the coolant system.

Reattach the drain valve and then fill the coolant system up with a mixture of half antifreeze and half water. Stop once you reach the indicated line on the reservoir.

Your car's coolant system has now been successfully flushed. Dispose of the coolant and flushed water in the sealed containers in the appropriate manner: many dumps have chemical disposal services available. Drive as normally, but after a few days double check the coolant system to ensure that it is still filled to the maximum amount, and refill it as needed.

To learn more, contact an Auto shop North York