In lubricants, use cases describe the specific applications or environments where a lubricant is used, such as automotive engines, industrial machinery, hydraulic systems, marine equipment, or metalworking operations. Each use case requires a lubricant with tailored properties—like viscosity, thermal stability, and wear protection—to ensure smooth operation, reduce friction, and prevent damage. Understanding the use case helps in selecting the right lubricant for maximum efficiency and equipment longevity.