Conventional Vs. Synthetic Oil: Which is Better?

Oil changes are one of the most important services to have performed on your vehicle regularly. Engine oil lubricates your engine’s internal components, keeping your car running smoothly and extending the life of your investment. Each time you take your car to the shop, the service writer may ask if you would prefer conventional or fully synthetic oil. But, what’s the difference, and what are the benefits of choosing the more expensive synthetic option? 

What is the difference?

The main difference between conventional engine oil and synthetic is how they are made. Synthetic oil starts out with a more refined crude oil than conventional and then additives enhance the properties of synthetic oil, along with artificially made compounds and a carrier oil that evenly distributes the additives. 

Conventional oil isn’t bad, in comparison. Some engines do require synthetic oil to run properly but many can run well on conventional oil as well. The reduced cost of conventional oil makes it a common choice for many drivers, as it can cost between six and ten times less than synthetic oil. 

Why do drivers choose synthetic oil?

Despite the increased cost of synthetic oil, it actually can save you money in the long run. Synthetic oil lasts longer, and while conventional oil needs to be changed every 3 months or 3,000 miles, synthetic oil can last more than two times longer than conventional. It could also extend the life of your car’s engine, thanks to the way it is made. 

As a result of the manufacturing process, synthetic oil creates less friction and breaks down more slowly over time. I can also handle more cycles of heating and cooling without losing its protection and cleaning properties. The increased purity reduces engine build-up and increases performance. The reduced friction can even marginally increase fuel economy. High-performance engines and engines that rev to higher RPM might require synthetic oil to run smoothly.

Choosing the right oil doesn’t just come down to synthetic or conventional. Cold start viscosity and at-temperature viscosity also play a huge role in what oil you should be using. A highly-trained technician should be able to help you decide which oil is right for your vehicle. Ready for more than just an oil change? If you're looking to take your ride to the next level, Herb Gordon Subaru can help you find the perfect vehicle. Contact us today.