👉 Fill fluid, also known as lubricating oil or hydraulic fluid, is a specialized liquid used to reduce friction and wear between moving parts in machinery and equipment. It serves as a lubricant, providing smooth operation and extending the lifespan of components by minimizing metal-to-metal contact. Additionally, fill fluid helps dissipate heat generated during operation, cools moving parts, and can also act as a sealant or anti-corrosive agent. It is crucial in various industrial applications, including hydraulic systems, engines, and aerospace equipment, ensuring efficient and reliable performance.