How to Keep a Car From Overheating

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Keeping a car from overheating requires maintaining the coolant system every 36,000 miles or three years, where the antifreeze is replaced, the system is flushed and all impurities are removed. Take measures to avoid an overheating engine with automotive advice from an ASE-certified master mechanic in this free video on car maintenance.

Part of the Video Series: Car Maintenance & Troubleshooting
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Video Transcript

Hello, my name is Mark. In this segment we're going to cover how to prevent your engine from overheating. There's several things that can cause your vehicle to overheat or run excessively hot, and I'll just kind of touch briefly on each one of those. The first thing is, is lack of maintenance. The vehicle's cooling system needs to be flushed out. Most manufacturers recommend every three years or thirty-six thousand miles. That information can be found in the owner's manual in each and every vehicle, and you should look that up to check the service intervals. You can take that into a shop, and they can professionally do that where they just recycle the antifreeze, they hook a machine up to your engine, flush that system out. Remove all the impurities, restore the PH factor of the antifreeze so it's not so acidic and causing a corrosion, and keep the vehicle system maintenance up to date without removing and discarding the old antifreeze. It helps the environment, and it's really a good, sound way of keeping the cooling system maintained. That's the first and key most important thing. Another thing that causes a problem, especially down in the southeastern region on the United States, is bug deposits. As you're driving along, bugs get sucked up into your air intake system down here and up in through the radiator, or the intake vents, and get clogged into the radiator. And that prevents the air from getting through the radiator and cooling correctly. The only way you can do is just simply remove the grill and what not. You get in with a brush and lightly brush those, remove 'em, or have 'em pressure cleaned out. That's another thing that happens. Also, because of the way the cars are designed today, smaller, lighter, higher horse power weight ratios, to get better gas mileage, they've made the cooling systems as small as possible to keep the engine cool under normal driving conditions. So if you put it under a extreme load condition where you've got a full load on the vehicle, towing a trailer and going up a mountain pass, it'll have a tendency to climb up and really overwork the cooling system. Another way you can help to alleviate this is by turning you heater on inside the car. Rolling down your windows so you don't get heated out, but the heater will help dissipate that extra heat in a situation like that where you have overwork of your cooling systems. Those are some of the things that can cause your vehicle to overheat or run hot, and those are some of the ways you can help prevent it. Thank you for watching.


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