Why does Subaru use 0w20 engine oil?

[Donald]

Subaru uses 0w20 engine oil because Subaru employs horizontally opposed engines. The clearances between components in this type of engine are smaller than those in conventional engines, making these engines more precise and requiring the use of 0w20 oil. Model designation meaning: The 'w' in the oil model designation stands for 'winter', indicating that the oil can be used normally during winter. If there's a 'w' in the oil model, it means the oil can function properly in winter conditions. The number before the 'w' represents the oil's low-temperature fluidity, with 0w indicating the oil can flow normally at temperatures as low as -35 degrees Celsius. The number after the 'w' indicates the oil's high-temperature viscosity, with higher numbers representing greater viscosity. Functions of engine oil: Engine oil is often referred to as the 'blood' of the engine. Without oil, the engine cannot operate normally. Inside the engine, oil not only serves as a lubricant but also performs cleaning, sealing, cushioning, rust prevention, and heat dissipation functions.