What is sae20w oil?

SAE 20W oil is a type of motor oil that is classified by the Society of Automotive Engineers (SAE) based on its viscosity. The "20" indicates the oil's viscosity rating at high temperatures, while the "W" stands for winter, indicating its performance in colder temperatures. This oil is designed to provide adequate lubrication in a range of temperatures, making it suitable for various engines, particularly in moderate climates. It helps ensure smooth engine operation and protects against wear.