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Understanding oil viscosity is essential for maintaining your vehicle’s performance, as using the right viscosity ensures proper lubrication, reduces engine wear, and helps your engine run efficiently in different driving conditions. Read on to learn more about oil viscosity and its impact on engine health.
Motor oil grades indicate the oil’s viscosity. Classifications include single-grade oils and multi-grade oils, such as 10W-40. Understanding motor oil grades and classifications is crucial for ensuring your vehicle’s engine runs smoothly and efficiently.
Explore how motor oil grades influence engine protection, efficiency, and long-term health, with expert tips on making the best choice for your vehicle's needs.
Most engine oils will be multi-viscosity with a low- and high-temperature grade, like 5W-30 or 10W-30. Multi-viscosity blends are usually the best choice for most applications, as the oil provides protection in multiple climates or environmental conditions.
identify quality motor oils for gasoline- and diesel-powered vehicles. Oils displaying these marks meet performance requirements set by U.S. and international vehicle and engine manufacturers and the lubricant industry.
ENGINE OIL VISCOSITY CHART. What do oil viscosity numbers mean? Viscosity is the resistance to flow of a fluid. Motor oil viscosity grades are based on a scale developed by the API (American Petroleum Institute) lubricant organization.
Find out what SAE ratings on engine oil stand for, as well as other key information you need to know when buying motor oil.
Choosing Oil Grades: Selecting the right oil grade ensures proper lubrication and protection for your engine. Refer to the manufacturer’s recommendations to determine the most suitable SAE rating for your vehicle.
Understand viscosity grades and the engine oil specification chart to ensure the right oil for your vehicle by following Castrol's guide.
In typical viscosity charts, you can find the saybolt viscosity of an engine oil at warm temperature (100 °F) and hot temperature (210 °F) ISO/ AGMA/ SAE Viscosities. In the middle of the viscosity chart, you’ll have 4 different oil grade types.