If you’ve never heard of 5W20 or 5W30, it’s time to learn. These are the two most common motor oils used in regular vehicles, and they have a lot in common. Both are made from refined base oil and additives, they’re both rated with a “W” number and cost about the same. But what’s the difference between them?
The main difference is their viscosity index (VI). The higher the VI rating, the thicker it is, which means more resistance to heat transfer. The thinner oils are easier to flow through an engine, while thicker ones have more resistance and can help prevent gelling in winter months.
This also makes them less susceptible to oxidation over time—oxidation is when harmful elements like air and water get into your engine and clog up components like pistons. So if you’re looking for long-term performance from your car’s engine oil, go to https://arospeed.com/ and with a thicker oil like 5W30 or 10W30 instead of a thinner one like 5W20 or 10W20.
Is There A Big Difference between 5w20 and 5w30?
There is a big difference between 5w20 and 5w30. The 5w20 is the oil you’d use for a standard vehicle, and the 5w30 is a higher grade of oil that’s designed to handle higher operating temperatures.
The difference between these two grades is based on their viscosity ratings. The viscosity rating measures oil’s resistance to flow, while its pour point and flash point are used to determine its volatility.
Viscosity ratings are expressed in terms of centistokes (CST). A CST rating of 100 means oil has zero shear resistance, which makes it ideal for high-performance engines like those found in race cars or heavy-duty equipment. Typically, semi-synthetic oils have a viscosity rating of around 80 CST; whereas synthetic oils can go up to 100 CST or even 140 CST.
The Bottom Line
So, just to recap, if you have a newer car, particularly if it is turbocharged, you may want to consider using synthetic motor oil with 5W30 classification. If your vehicle is older and has higher mileage you’re likely better off sticking with the tried and true 5W20 variety as it is already fully compatible with all of your engine pieces. In fact, unless you are a professional racecar driver racing multiple times throughout the year, or simply have extra money to burn when it comes time to change your motor oil, the more economical 5W20 is the better choice for the vast majority of drivers. You can learn about the role of engine oil, also known as mobile oil, in the performance of your vehicle’s engine, on this website: https://auto24insurance24online.com