As a car owner, you constantly hear about the importance of regular engine oil changes. But have you ever wondered why old engine oil is bad for your engine and when is the right time for a change? In this article, we explain everything you need to know about old engine oil to keep your vehicle running smoothly.
A mechanic draining old, dark engine oil from a car engine during an oil change service.
What Happens to Engine Oil Over Time?
Engine oil is the lifeblood of your engine. It lubricates the moving parts, reduces friction and wear, and helps regulate engine temperature. However, over time, the oil loses its lubricating properties and becomes contaminated with dirt particles, metal shavings, and combustion residues.
“Old engine oil can lead to increased engine wear and even engine damage,” says Hans Schmidt, master mechanic and author of the book “Car Repairs Made Easy”.
If the oil is not changed in time, the dirt particles can act like abrasives and damage engine parts. Additionally, the thickened oil can impede oil flow in the engine and lead to overheating.
When Should I Change My Engine Oil?
Most vehicle manufacturers recommend an oil change every 10,000 to 15,000 kilometers (6,000 to 9,000 miles) or once a year, whichever comes first. However, there are exceptions:
- Frequent Short Trips: If you mainly use your car for short trips, you should change the oil more frequently because the engine does not reach optimal operating temperature, and condensation can accumulate in the oil.
- Extreme Driving Conditions: Driving under extreme conditions such as dust, heat, or heavy loads can also shorten the oil change interval.
- Vehicle Manual: When in doubt, you should always follow the recommendations in your vehicle’s manual.
Close-up of a dipstick being used to check the oil level in a car engine.
What are the Benefits of Regular Oil Changes?
Regular oil changes are one of the most important maintenance tasks you can have performed on your vehicle. The benefits are obvious:
- Extended Engine Life: Clean engine oil protects your engine from wear and tear, thus extending its lifespan.
- Improved Fuel Economy: A clean engine runs more efficiently and consumes less fuel.
- Fewer Repairs: Regular oil changes can help prevent costly engine damage.
- Environmental Protection: Old engine oil is hazardous waste and must be disposed of properly. Regular oil changes also protect the environment.
How Do I Know if My Engine Oil Needs Changing?
In addition to the recommended oil change intervals, there are some signs that indicate your engine oil should be changed:
- Dark Oil Color: Fresh engine oil has a light amber color. Old oil, on the other hand, is dark and cloudy.
- Burnt Smell: If your engine oil smells burnt, this is a sign that it has overheated and lost its lubricating properties.
- Unusual Engine Noises: Clicking or knocking noises from the engine compartment can be an indication of low oil level or worn-out engine oil.
Engine Oil Additives: Useful or Not?
There are a variety of engine oil additives on the market that promise to improve oil performance or clean the engine. Whether the use of additives is useful depends on the condition of the engine and the quality of the engine oil used.
Tip: When buying engine oil and oil filters, pay attention to high-quality products that meet your vehicle’s specifications.
Conclusion
Regular oil changes are essential for the lifespan and performance of your engine. Pay attention to the recommended change intervals and the signs of worn-out engine oil. This way, you can avoid costly repairs and ensure that your vehicle lasts you a long time.
Do you have questions about engine oil or other maintenance work? Feel free to contact us via our website! Our car repair experts are available around the clock.
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