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Apache Blvd: (480) 894-5584

Synthetic vs. Semi-Blend Engine Oil: What’s the Difference and Why It Matters

When it comes to protecting your engine, oil is your first line of defense. But with all the options out there—synthetic, semi-blend, conventional—it can be tough to know what’s best for your vehicle. Today, we’re breaking down the key differences between synthetic and semi-blend engine oil, how often you should change them, and what else we check during a routine oil change.

Semi-Blend Oil: A Solid Performer

Semi-synthetic (or synthetic blend) oil combines conventional oil with synthetic oil. This gives you better protection and performance than conventional oil, but at a more budget-friendly price than full synthetic.

It’s a solid choice for:

  • Everyday drivers
  • Moderate climates
  • Those who want extended engine life without paying full synthetic prices

Change Interval:

Typically, semi-blends should be changed every 3,000 to 5,000 miles—again, this depends on how and where you drive.

Synthetic Oil: Engineered for Performance

Synthetic oil is chemically engineered to provide the highest level of engine protection. It flows better at low temperatures, resists breakdown at high temperatures, and reduces engine wear significantly. Because of its superior performance, synthetic oil is ideal for:

  • High-performance engines
  • Extreme temperatures (hot or cold climates)
  • Towing or heavy-duty use
  • Vehicles with turbochargers or direct injection

Change Interval:

Most synthetic oils can last 5,000 to 7,500 miles between changes, depending on driving conditions and vehicle manufacturer recommendations.

What Else Gets Checked During an Oil Change?

An oil change at Half Price Auto Repair & Performance is more than just draining and refilling engine oil. We also take the opportunity to inspect key systems and catch any issues early. Here’s what we check:

  • Oil Filter: Always replaced with fresh oil.
  • Air Filter: Checked for dirt and clogs.
  • Fluids: Coolant, brake fluid, power steering, windshield washer—topped off or flushed if needed.
  • Belts & Hoses: Inspected for cracks, fraying, or leaks.
  • Battery: Visual check and voltage test on request.
  • Tires: Pressure check and tread wear inspection.
  • Wipers & Lights: Ensured they’re functioning properly for safety.

Final Thoughts

Choosing the right oil and sticking to a regular maintenance schedule can make a huge difference in your vehicle’s performance and lifespan. Whether you’re going full synthetic for long-lasting protection or opting for a semi-blend to balance budget and reliability, we’ve got the products and expertise to help you make the best choice.

Need an oil change or have questions about your oil type?

Stop by any of our Valley locations or give us a call—we’re here to help keep your car running smooth.

Indian School Location:
(623) 848-1970
Scottsdale Location:
(480) 590-4397
32nd Location:
(602) 935-3551
Glendale Location:
(602) 888-2277
Cave Creek Rd Location:
(602) 888-2277
7th Street Location:
(480) 686-8125