Many people ask the question: How Can I Tell If My Oil Needs Changed? It is good to know since your engine oil is the lifeblood of your vehicle, keeping its moving parts properly lubricated and running smoothly. But like any fluid, oil breaks down over time and loses its effectiveness — and knowing when it’s time for a change can save you from serious engine damage down the road. If you want to know if your oil needs changed, there are a few key signs to watch for, From the color and texture of your oil to dashboard warnings, strange smells, or unusual engine behavior.  Here are five ways you can tell if your oil needs changed.

1. Dark and Dirty Oil

2. Oil Change or Check Engine Light is on

3. You Smell Oil Inside the Car

4. Engine Noise/Knocking

5. Exhaust Smoke

Things to Know About Oil Changes for Your Car

1. When or How Often to Change Your Oil
How often you should change your oil depends on several factors, including the type of vehicle you drive, your driving habits, and the kind of oil used. A common rule of thumb used to be every 3,000 miles, but with advancements in engine technology and synthetic oil formulations, many modern vehicles can go 5,000 to 7,500 miles, or even up to 10,000 miles between oil changes.

Your owner’s manual is the most reliable source for your vehicle’s recommended oil change interval. Additionally, if you frequently drive in extreme conditions—such as stop-and-go traffic, dusty environments, or very hot or cold weather—you may need to change your oil more often. At Roberts Automotive, we always recommend checking your oil regularly and scheduling timely oil changes to keep your engine running at peak performance and avoid costly repairs.

2. Choosing the Right Oil for Your Car
Selecting the right type of oil is just as important as knowing when to change it. The two most common types are conventional oil and synthetic oil, and each has its benefits depending on your vehicle and how you drive.

Conventional oil is derived directly from crude oil and typically costs less, making it a budget-friendly option for older vehicles or those with low-mileage driving habits. However, it tends to break down faster and usually requires more frequent changes—every 3,000 to 5,000 miles.

Synthetic oil, on the other hand, is engineered for high performance and longevity. It flows better in extreme temperatures, resists breakdown, and provides superior engine protection. While it’s more expensive upfront, synthetic oil can often last up to 10,000 miles or more between changes, especially in modern engines that are built with tighter tolerances.

Some vehicles also use synthetic blends, which offer a middle ground—mixing synthetic and conventional oils for improved performance without the full cost of pure synthetic.

Always check your owner’s manual to determine which oil is recommended for your specific make and model. Many newer cars, particularly German and luxury vehicles, require synthetic oil to meet the performance standards of turbocharged engines and high-temperature conditions. If you’re unsure, the experts at Roberts Automotive can help you choose the best oil for your vehicle’s needs and driving conditions.

3. How often should you check the oil level

Regardless of how often you get your oil changed, you should check the oil level regularly and top it up as needed. Many car manufacturers recommend checking your oil level once a month, especially if you drive frequently or for long distances.

We hope this helps you tell if your oil needs changed.  For additional information visit our oil change services page