What Is Conventional Oil? Conventional oil is made from refined crude oil. It's the traditional choice for engines and is usually less expensive. However, it breaks down faster and needs more frequent changes.
What Is Synthetic Oil? Synthetic oil is man-made and chemically engineered to offer better performance. It lasts longer, handles extreme temperatures better, and keeps your engine cleaner.
Key Differences at a Glance
| Feature | Conventional Oil | Synthetic Oil |
|---|---|---|
| Price | Cheaper upfront | More expensive |
| Engine Protection | Basic | Superior |
| Oil Change Frequency | Every 3,000–5,000 miles | Every 7,500–10,000 miles |
| Performance | Standard | High-performance, extreme conditions |
Pros and Cons
Conventional Oil
- Lower upfront cost
- More frequent oil changes needed
- Adequate for older or low-mileage vehicles
Synthetic Oil
- Higher cost, but longer intervals between changes
- Superior engine protection and performance
- Better for extreme temperatures and modern engines
Which Oil Is Best for My Car? Check your owner's manual for manufacturer recommendations. Generally, synthetic oil is best for newer, high-performance, or turbocharged engines, while conventional oil may suffice for older vehicles with simple needs.
Frequently Asked Questions
Q: Can I switch from conventional to synthetic oil?
A: Yes, but check your owner's manual and consult your mechanic.
Q: Is synthetic oil worth the extra cost?
A: For most modern cars, yes—due to better protection and longer intervals.
Q: How often should I change my oil?
A: Synthetic: 7,500–10,000 miles. Conventional: 3,000–5,000 miles.