Testing And Changing Your Coolant

March 30, 2020 12:26 pm Published by

With the seasons changing and the weather getting warmer, you need to take the appropriate steps to make sure that your car is ready to handle the heat. You may think that all you would need to do would be to change your air filter and have your A/C system checked, but one of the most important things you need to do is to test, and if necessary, change your coolant. Your vehicle’s coolant works to move heat away from your engine by moving through a system of pipes, heating up the coolant as it passes through the engine, and then cooling that liquid off as it passes through the radiator. Your coolant essentially keeps your car running at a nominal temperature, ensuring that none of your components melt or warp due to excess heat. If you want to learn more about how you can test or change your own coolant, come into your local U Pull And Pay today. Our expert staff will help you find all the parts you need to handle any DIY project you have in mind.

Testing Your Coolant

The last thing you want to do is waste good coolant by changing your coolant before it needs to be changed. You can easily test your coolant by using a simple multimeter. Start with a cold engine, remove your radiator cap and start the engine. Set your digital multimeter to DC voltage at 20 volts or less and wait for your engine to reach operating temperature. Once your engine reaches operating temperature, insert the positive probe directly into the coolant. Next, rev the engine up to 2,000 rpm and put the negative probe on the negative battery terminal. If your readout is .4 volts or less, your coolant is still fully functional and healthy. If your multimeter is reading .4 volts or more, your coolant has broken down too much to be functional. Additionally, you may want to think about replacing your radiator, water pump, or heater core, so make sure you check each of those as well.

Changing Your Coolant

If you have tested your coolant and you need to change it, check your owner’s manual and pick up an air-powered refilling tool. Start by jacking up your car and putting a large drain pan under your radiator. Loosen the radiator hose with pliers or a screwdriver and remove the hose. Let the radiator and water pump drain completely, and then reattach the hose and clamp. Remove the block drain plugs and fully drain, reinstall after this step.

Insert the air tool into the radiator neck and route the open end of the tool’s exhaust hose into an empty gallon bucket. Open the valve and let the vacuum increase in pressure until it hits the red zone on the gauge. Now you can pour in the fresh coolant while the vacuum removes any air pockets. Now just screw your radiator cap back on, lower your vehicle, and you are good to go!

If you want to find parts, tips, information about how you can become a DIY mechanical expert, come into your local U Pull And Pay today. Our expert staff will help you get all the parts you need for a price you’ll love.




Categorised in: , , , , , , , , , , ,

This post was written by Jonathan Kling