Oil Changes in Fresno: Synthetic vs. Conventional and What's Right for You

Bryan Montalbano • October 29, 2025

An oil change might seem like a simple, routine service, but it is the most critical maintenance you can perform for your car's engine. The right oil protects against wear, keeps your engine clean, and helps it run efficiently. The wrong oil, or going too long between changes, can lead to costly damage.


For drivers in Fresno, the choice between synthetic and conventional oil is especially important. Our climate and driving conditions demand the best protection. Let's break down the differences to help you decide what is right for your car and your budget.


The Basics: Conventional Oil

Conventional oil is refined directly from crude oil. It's a reliable, cost-effective lubricant that has been used for decades.


Best For: Older vehicles with simple engine designs and lower mileage, where the manufacturer's specifications do not require synthetic.


Pros:

  • Lower cost per oil change.


Cons:

  • Breaks down faster under extreme heat and stress.
  • Requires more frequent changes, typically every 3,000 to 5,000 miles.
  • Offers less protection for high-performance engines.


The Advanced Choice: Synthetic Oil

Synthetic oil is engineered in a lab. Its molecules are more uniform and designed for superior performance. This man-made process allows it to handle extreme conditions much better than conventional oil.


Best For: Most modern vehicles, including:

  • Turbocharged or supercharged engines.
  • High-performance cars (like BMW, Mercedes, etc.).
  • Vehicles used for frequent towing or hauling.
  • Newer models where it is required by the manufacturer.


Pros:

  • Excellent resistance to breakdown from Fresno's intense summer heat.
  • Flows better at low temperatures for easier cold starts.
  • Keeps the engine cleaner by preventing sludge buildup.
  • Allows for longer intervals between changes, typically 7,500 to 10,000 miles.


Cons:

  • Higher initial cost per oil change.


Why Fresno's Climate Makes This Choice Critical

The debate between synthetic and conventional oil isn't just theoretical here in the Central Valley. Our environment puts both types to the test.


Extreme Heat: Engine temperatures can soar during a Fresno summer. Conventional oil oxidizes and thickens more quickly in this heat, losing its protective qualities. Synthetic oil is specifically formulated to maintain its viscosity and protective strength even under prolonged high-stress conditions.


Dust and Debris: Our agricultural surroundings mean more dust and particulate matter in the air. This can contaminate engine oil. Synthetic oils often have superior detergents that hold these contaminants in suspension until the oil is drained, preventing sludge and protecting engine components.


Making the Right Choice for Your Vehicle

So, which oil should you choose? Here is a simple guide:


Follow Your Owner's Manual: This is the most important rule. Your car's manufacturer specifies the required oil viscosity and type. If it says "synthetic oil required," you must use it.


Choose Synthetic If:

  • You drive a modern car, truck, or SUV.
  • Your vehicle has a turbocharger.
  • You want the best possible protection for your engine.
  • You prefer the convenience of fewer oil changes throughout the year.


Conventional Might Be Acceptable If:

  • You drive an older, high-mileage vehicle that has always used conventional oil without issue.
  • Your budget is the primary concern for a car you plan to replace soon.


There is also a third option: Synthetic Blend Oil. This mixes conventional and synthetic base oils, offering a middle ground of better protection than conventional at a lower cost than full synthetic.


The Verdict on Value

While synthetic oil costs more per quart, its extended drain intervals often make the annual cost comparable to using conventional oil with more frequent changes. You get superior engine protection with roughly the same number of shop visits per year.


Still unsure which oil is the best fit for your car and driving habits? The technicians at Fresno Tire Co. can help. We'll check your owner's manual, consider your vehicle's age and condition, and explain the best option for your needs. We offer high-quality conventional, synthetic blend, and full synthetic oil changes to keep your engine running strong. Schedule your next oil change with us in Fresno by calling (559) 762-4441.

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