An oil that is too thick can create excessive drag on engine components, reducing fuel efficiency and making it harder for the engine to turn over. Manufacturers specify the exact viscosity grade and performance standards required for your specific engine design and climate.
5w30 vs 5w20 Oil Numbers: Understanding the Difference
For example, 5W-30 flows more easily at cold temperatures than 15W-40, making it more suitable for harsh winter climates. These include industry standards set by organizations like the American Petroleum Institute (API) and the International Lubricant Standardization and Approval Committee (ILSAC).
As a result, synthetic blends or full synthetics frequently maintain their viscosity more effectively in both extreme heat and cold. The designation provides critical information about viscosity, or the oil's resistance to flow, ensuring your engine operates smoothly under varying temperature conditions.
5w30 vs 5w20: Understanding the Viscosity Difference
Understanding what the numbers on oil mean is essential for anyone who owns a vehicle. The most critical step is consulting your vehicle's owner manual.
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