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Is 5W-30 oil synthetic or conventional?

5W-30 oil is a type of synthetic motor oil. Synthetic oils are engineered in a lab to have specific properties that make them more effective than conventional, mineral-based oils. 5W-30 is a common viscosity grade for synthetic motor oils used in many modern vehicles.


What is 5W-30 Oil?


5W-30 is a motor oil classification that refers to the oil's viscosity, or thickness. The "5W" part indicates the oil's cold weather performance - it can flow easily when the engine is cold, making it easier to start in cold temperatures. The "30" refers to the oil's thickness at normal engine operating temperatures.


Synthetic 5W-30 oils are designed to provide superior protection and performance compared to conventional mineral-based oils. They are engineered to maintain their viscosity and lubricating properties over a wider range of temperatures and operating conditions.


Why Use Synthetic 5W-30 Oil?



  • Improved Fuel Efficiency: Synthetic oils have lower internal friction, which can improve fuel economy by 1-2% compared to conventional oils.

  • Better Wear Protection: Synthetic oils contain additives that provide superior protection against engine wear and deposits.

  • Longer Oil Life: Synthetic oils can typically last 5,000-10,000 miles between changes, compared to 3,000-5,000 miles for conventional oils.

  • Enhanced Performance: Synthetic oils maintain their viscosity and lubricating properties better in extreme temperatures, providing improved engine performance and protection.


Many modern vehicles, especially those with turbocharged or high-performance engines, require the use of a synthetic 5W-30 oil to meet manufacturer specifications and ensure optimal engine protection and performance.

What happens if you put synthetic oil in a conventional engine?


Can You Mix Conventional Oil With Synthetic? The short answer is yes. There is no danger or risk of combustion, and mixing the two types of oil won't harm your engine. However, it's important to note that if you do mix the two, the conventional oil can keep the synthetic from performing to its fullest potential.



Can I use 5W-30 fully synthetic oil?


The oil will list the spec, check your cars handbook and use whichever 5w30 meets the spec. Avoid cheapo oils like drivetec if you have a nicer car; they're fine for cheap cars but if your car has a turbo etc you want a good quality synthetic oil.



Why can't you go back to regular oil after synthetic?


Myth: Once you switch to synthetic oil, you can never switch back. This is one of the most persistent myths about synthetic oil—and completely untrue. You can switch back and forth at any time. In fact, synthetic blends are simply a mixture of synthetic and conventional oils.



What happens if I put synthetic blend instead of full synthetic?


For most vehicles, synthetic blend is a good choice. If your vehicle speficies that full synthetic is required, then a synthetic blend will not be okay – it could actually leave your engine vulnerable to damage.



Is 5w30 oil synthetic?


Premium 5w30 Engine oil is available in a full synthetic, conventional, or semi-synthetic blend. Regardless of lube oil type, you get the same viscosity and performance from the oil.



What happens if you put regular oil in a synthetic oil engine?


Can You Mix Conventional Oil With Synthetic? The short answer is yes. There is no danger or risk of combustion, and mixing the two types of oil won't harm your engine. However, it's important to note that if you do mix the two, the conventional oil can keep the synthetic from performing to its fullest potential.



How do I know if I need conventional or synthetic oil?


How Do I Know Whether My Car Needs Conventional or Synthetic? The easiest way to tell whether your vehicle requires conventional or synthetic oil is to check the car's owner's manual. There will be a page (either in the printed or online version) that describes the exact oil type recommended by the manufacturer.



What's better, full synthetic or blend?


Full synthetic oil offers longer oil change intervals and prevents sludge formation in your engine. However, synthetic blend oil is more affordable, can withstand extreme temperatures, and works well for heavy-duty use. Therefore, it's often recommended if you're driving a Hyundai SUV or perform frequent tow jobs.



Is 5W-30 always synthetic?


Premium 5w30 Engine oil is available in a full synthetic, conventional, or semi-synthetic blend. Regardless of lube oil type, you get the same viscosity and performance from the oil.



Is it better to change oil, conventional or full synthetic?


Yes, synthetic oil is better for your engine than conventional oil. Although conventional oil (i.e., mineral oil) can provide adequate lubrication performance, it can't compete with the overall engine performance and protection provided by synthetics.


Kevin's Auto

Kevin Bennett

Company Owner

Kevin Bennet is the founder and owner of Kevin's Autos, a leading automotive service provider in Australia. With a deep commitment to customer satisfaction and years of industry expertise, Kevin uses his blog to answer the most common questions posed by his customers. From maintenance tips to troubleshooting advice, Kevin's articles are designed to empower drivers with the knowledge they need to keep their vehicles running smoothly and safely.