Why Do Cars Need Oil Changes? (11 Reasons Why)

If you have ever driven a car, you know the vehicle needs to have an oil change. It’s not just another regular maintenance check-up – it is especially critical to have your car’s oil changed regularly to keep it running and in good condition.

Furthermore, the oil in your car’s engine makes it run. Without it, your vehicle would stop working. Here, I will uncover why a car oil change is necessary!

Why Do Cars Need Oil Changes?

1. Keeps Engine Clean

Oil is the lubricant that keeps every moving part of your engine running smoothly, from the pistons to the bearings.

Without oil, all those parts would wear down and break down much faster, which would mean less power for you to use on the road.

In addition, a clogged engine with debris and motor oil deposits will lose horsepower and run less efficiently.

As a result, changing your engine oil frequently will remove any potentially harmful dirt and debris from your engine ahead of time.

2. Longer Engine Life

Cars need oil changes because they’re essential for your car’s engine to run smoothly and acquire longer engine life.

As well as that, changing your oil regularly may keep your vehicle’s parts fresh and the engine running well.

For that reason, by changing your oil and filter according to your owner’s manual specifications, you will keep your engine clean and secured while saving time and money.

Overall, a regular oil change is an investment that will help ensure that you can drive your vehicle and achieve more extended engine capacity.

3. Better Gas Mileage

Oil goes beyond just helping your engine—it also helps with gas mileage!

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Additionally, a well-maintained engine will burn less fuel because it doesn’t need to work as hard when you drive down the road.

Besides that, as new oil circulates through the engine, the lubrication of the metal parts improves engine performance and allows it to run more efficiently, therefore, consuming less gas.

Above all, maintaining clean oil in your engine will help to reduce friction, allowing your engine to run more efficiently and get the best gas mileage.

4. Oil Protects Other Engine Parts

Oil protects other engine parts from damage by lubricating and cushioning them.

Along with this, it prevents metal-to-metal contact that can cause friction, which results in heat being generated.

Most of the oil is used to lubricate the crankshaft, while the remainder is utilized to smoothen the camshaft and timing belt.

Therefore, keeping clean oil in your engine is critical to keeping all these components moving and running smoothly.

5. Reduced Engine Heat

Engine heat depends on many factors—the fuel used, how much fuel is being burned at once, how much air is being pumped into the engine, and even how fast you’re driving.

But, no matter what kind of car you drive, there’s one thing all vehicles have in common: they all generate heat while they’re running.

Subsequently, this heat can cause damage to various components inside the engine if not adequately controlled or dissipated through cooling systems.

Therefore, while the cooling system keeps the heat at bay most of the time, fresh oil helps lower the engine’s temperature in places where coolant cannot reach.

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6. Standard Vehicle Emissions

Standard Vehicle Emissions

Euro 6d-TEMP determines whether a vehicle is clean enough to enter environmental zones such as polluted city centers.

In line with this, a car is tested against real-world emissions and conforms to mandatory compliances to meet these more stringent standards.

As a result, you will not only pass this important emissions test if you change your oil on time, but you will also contribute less pollution to the environment!

7. Better Engine Performance

Frequent oil changes will likely improve performance because it allows the engine’s components to run more smoothly.

Because of that, this can result in a more responsive vehicle, improved fuel economy, and a better-oiled engine that will last longer.

Accordingly, quality oil keeps your engine internals lubricated, which means they will wear down much more slowly, resulting in a longer car life.

8. Protects Against Corrosion

Oil not only lubricates metal parts and concedes them to move with less friction but also acts as a rust-prevention barrier.

By that very fact, the idea is simple: with an oil coating, moisture cannot occur with the iron in the metal and create rust.

By all means, replacing your oil regularly with clean oil is critical to keeping your engine corrosion-free.

9. Fights Against Wear & Tear

Synthetic oil acts as a lubricant for all the moving parts in your car’s engine, including valves and gears.

As a result, these parts can wear down over time if they aren’t appropriately greased.

Additionally, oil lubricant is added to improve its resistance to wear, high temperatures, cold weather, and sludge buildup.

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So, oil is essential because it protects other engine parts from wear and tear. Thus, they would be damaged much faster if not for the oil in your car’s engine.

10. Save Future Expenses

A regular oil change can help you save money by extending the life of your vehicle, which ultimately saves you money on future repair costs.

When you change your car’s oil, you do what’s best for the vehicle and its engine. But there’s more to it than that.

You also save money in the long run by maintaining the proper level of lubrication and keeping your vehicle running smoothly.

11. Increased Resale Value

When you drive cars off the lot, especially brand-new vehicles, cars lose value. But unfortunately, certain aspects of your car’s resale cost are beyond your control.

On the other hand, regular maintenance, frequent oil changes, and repairs can all help increase the worth of your vehicle when you resell it.

Overall, periodically changing your car oil is one of the best ways to increase the value of your payout.

To know more, you can also read our posts on why people key cars, why cars stall, and why cars need gas.


As it turned out, the essential routine vehicle maintenance is a regular oil change.

Some benefits of regular oil changes include keeping the engine clean, extending engine life, and improving gas mileage.

Overall, adequate oil lubrication in your car’s engine is fundamental for proper operation and vehicle longevity!

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