Oil lubrication is a process that reduces friction between moving parts in machinery by using oil as a lubricant. The oil forms a thin film between surfaces, preventing direct contact and minimizing wear and tear. This helps to maintain the efficiency and longevity of engines, gears, and other mechanical systems. In addition to reducing friction, oil lubrication also helps to cool components by dissipating heat generated during operation. It can carry away contaminants and debris, keeping the machinery clean. Regular maintenance and proper oil selection are essential for optimal performance and protection of equipment.