Oil purification is the process of removing impurities and contaminants from oil to improve its quality and extend its lifespan. This is essential in various industries, including automotive and manufacturing, where clean oil ensures better performance and reduces wear on machinery. Common methods of purification include filtration, centrifugation, and chemical treatments. The purification process helps maintain the oil's properties, such as viscosity and lubricity, which are crucial for effective operation. By keeping oil clean, companies can reduce maintenance costs and prevent equipment failures, ultimately leading to increased efficiency and productivity in operations involving machinery and engines.