Is Changing Your Own Oil Bad for Your Car? Debunking the Myth

For years, there has been a prevailing belief that changing your own oil is bad for your car. This perception often stems from the assumption that amateurs simply lack the experience and skill to perform the task correctly. However, to debunk this myth, we must examine the common concerns and the practices of both DIY enthusiasts and professional mechanics.

Common Concerns and DIY Practices

The question of whether changing your own oil is hazardous often revolves around fears of accidentally performing the task incorrectly. Some common errors include:

Omitting or double-layering O-rings or washers on the sump plug or oil filter housing, leading to massive leakage and running out of oil. Forgetting to secure the sump plug. Stripping or rounding components due to the use of the wrong tools. Over or under-filling the oil reservoir. Using the wrong type or grade of oil for the car, which can lead to severe damage. Incorporating contraindicated additives or flushes, which can be detrimental. Overtightening the oil filter housing, which can snap it. Overtightening and stripping the sump, causing internal damage. Allowing dirt to ingress and contaminate the engine. Oil spillage leading to damage of sensitive components such as sensors and other electrical parts. Accidentally discarding part of the oil filter housing cage, leading to a catastrophic loss of oil pressure. Breaking something while working in the engine bay. Experiencing a ramp failure and being crushed.

It is important to note that these errors can happen to both DIY enthusiasts and professional mechanics, as both groups may face similar challenges. However, professional shops often have insurance coverage for such mishaps, whereas DIY enthusiasts would need to bear the full cost of any damage.

The Role of Professional Mechanics

Many mechanics believe that owners who change their own oil are likely to make mistakes. This belief is often rooted in the idea that some owners may have a false sense of confidence in their abilities. However, this is not universally true, as many individuals are either hands-on and capable of performing oil changes correctly or prefer to leave such tasks to professionals.

Take, for example, the author's personal experience:

Both my last car, which had covered 194,000 miles, and my current car, which has covered over 240,000 miles, have been maintained with regular oil changes at the intervals specified by the manufacturer. Both vehicles continue to function well, without any signs of distress. My current vehicle, a BMW, is specified to use specific grades of oil, and I ensure that I use the correct type to prevent any potential damage.

I firmly believe that people who change their own oil can do so safely and effectively, provided they take the necessary precautions and follow the manufacturer's guidelines. The idea that you cannot trust the quality of service provided at an oil change shop is understandable. However, many oil change shops hire low-skilled, low-paid employees, and their primary focus is on completing the task quickly rather than providing a thorough service. In contrast, DIY enthusiasts can be more meticulous and take the time necessary to ensure the job is done correctly.

The Safety and Practicality of DIY Maintenance

The truth is, if you know what you are doing, changing your own oil is not only safe but also practical. Many people who do their own maintenance have the confidence and knowledge to perform tasks like oil changes correctly. They are familiar with the steps involved and understand the importance of following the manufacturer's recommendations.

One of my friends, for instance, once made a mistake by accidentally putting new oil into an engine that was still full of old oil. This is a clear example of why it is crucial to double-check your work. However, with proper attention to detail and regular intervals of checking fluid levels, such errors can be avoided.

Furthermore, performing your own oil changes can be more cost-effective in the long run. Replacing the oil filter and drain plug, inspecting the underbody, and ensuring everything is in order can be done far less expensively than at a professional shop. Additionally, you can directly monitor your vehicle's condition and make necessary adjustments without relying on others.

Conclusion

In conclusion, changing your own oil is not inherently bad for your car, provided you know what you are doing and follow best practices. While it is true that mistakes can happen, it is not a reason to avoid DIY maintenance. Many errors that might occur during a DIY oil change can also happen in professional settings. Therefore, it is essential to arm yourself with the right knowledge and tools to ensure that your oil change is done correctly. Whether you decide to trust a professional or tackle the task yourself, the key is to stay informed and maintain your vehicle with care.