Synthetic oil has become more popular over the years. It used to be only for high-performance cars, but now it's a common choice for everyday vehicles because of its low viscosity, which allows it to flow more easily. This helps reduce engine stress and can even improve fuel efficiency.

It's estimated that around 70% of new cars come with synthetic or a synthetic blend instead of conventional oil. However, conventional oil still has its place, especially in older vehicles or specific situations. Here’s a closer look at both options.

Advantages of Synthetic Oil

Synthetic oil starts from the same base as conventional oil—crude oil—but then undergoes additional chemical processes. Additives like castor wax, paraffin, or polyalphaolefin are added to improve performance. There's fully synthetic oil and synthetic blends, which mix in some conventional oil to keep costs down. Both types offer better flow at lower temperatures, maintain lubrication longer, and help clean the engine, offering better protection for its parts.

Here are some key reasons why synthetic oil is often preferred:

• Synthetic oil is less likely to break down and performs better under high heat, leading to a longer lifespan.
• It flows better in cold weather, helping your engine start up faster and run smoother during winter.
• It resists evaporation in hot conditions, making it more stable under extreme temperatures.
• Great for short trips and city driving, where frequent stops and starts can cause sludge buildup. Synthetic oil warms up quickly, burns away moisture, and prevents debris accumulation, reducing the risk of clogs and overheating.
• More cost-effective for heavy-duty use, such as towing or hauling, due to its durability and long-lasting performance.
• Can last two to three times longer than conventional oil, meaning fewer oil changes and less environmental impact. Some synthetic oils can go up to 15,000 miles between changes, compared to the typical 3,000 miles for conventional.
• Less likely to hold onto water and particles that could lead to rust and corrosion.

Keep in mind that not all synthetic oil changes are the same. Stick to the recommended interval—usually 5,000 miles—or check your vehicle manual for specific guidance.

When to Choose Conventional Oil

Conventional oil is made from crude oil with some additives to improve heat resistance and viscosity. It’s generally cheaper than synthetic, though the price difference can vary. While synthetic is often recommended, conventional oil can be a good option in certain situations:

• Older vehicles, as they were designed to work with conventional oil. In some cases, it may provide better lubrication and protection than synthetic.
• Cars with under 75,000 miles. At this point, engines are less prone to wear, and the lower viscosity of conventional oil won’t cause issues.

However, in colder climates or if your car has higher mileage, conventional oil can degrade faster and take longer to warm up. This can lead to:

• More frequent oil changes, ideally every 3,000 miles.
• Higher risk of engine clogs and sludge buildup.
• Increased strain on the engine in cold weather, especially before it warms up.
• More chance of holding onto moisture and debris, which can accelerate engine wear if changes are delayed.

When it’s time for an oil change, make sure to choose the right type for your car. If you need professional service, contact DaSilva’s Auto Body today. Visit our Naugatuck location to schedule your appointment.

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