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How Often Should You Change Your Oil?

Updated: 9/16/2019
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12y ago

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Clean oil in your car's engine is necessary to keep it running at its best. This preventative maintenance is easy to perform and can save you thousands of dollars later on in the car's life. In addition to regular oil changes, the dipstick needs inspection every few hundred miles to keep an eye on the oil's condition.

Why oil is important

Engine oil is the lubricant that reduces friction between engine parts. As oil gets older, it undergoes thermal breakdown due to high operating temperatures. When the oil begins to break down, it loses its protective properties allowing very expensive engine components to rub together and grind. It also contains acids that may work their way into the engine. One of its greatest properties is that it grabs rogue byproducts of combustion and dust that leak into the system. The oil suspends these particles, but can only hold a certain amount. Leaving these particles in the engine for extended periods of time can accelerate corrosion.

When to change oil

Changing your oil when you should is cheap in comparison to expensive engine repairs in the future if you do not. A brand new car can be reduced to junk in mere years if the oil is not properly cared for. For cars built before 2002, it is good practice to change your oil every 3,000 miles. Some car manufacturers claim longer periods between changes, but most mechanics agree that this is the key number. Older cars use conventional, petroleum based oils that break down easier. Vehicles built after 2002 generally utilize more advanced and durable synthetic oil formulas. They have better heat-resistant properties and can go longer between changes. For newer vehicles, it is best to consult the owner's manual or your mechanic. Changes vary greatly between makes and models, ranging from 5,000 miles to more than 10,000 miles.

In general, it is considered good practice to change the oil every 3,000 miles in cars built prior to 2002; newer cars utilize more advanced oils that vary greatly between each make and model, so consult the owner's manual or your mechanic.

By changing your oil at regular intervals, you are ensuring that your vehicle's engine lasts as long as possible. Whether you pay to have it changed or prefer to do it yourself, follow through with this easy maintenance task to ensure your car provides you with years of great service.

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12y ago
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