👉 Put fluid, also known as protective coating or lubricant fluid, is a specialized lubricant used in various mechanical and industrial applications to reduce friction and wear between moving parts. Composed primarily of oil or a mixture of oils, additives, and sometimes water, this fluid forms a thin, protective layer on surfaces in contact. This layer minimizes direct metal-to-metal contact, thereby decreasing heat generation and extending the lifespan of components. Put fluid is commonly found in engines, hydraulic systems, gearboxes, and other machinery where smooth operation and durability are critical. It helps maintain optimal performance by ensuring efficient power transfer and reducing the risk of damage from excessive friction or wear.