👉 The hold fluid, also known as hydraulic oil, is a critical component in hydraulic systems that serves multiple purposes. Primarily, it acts as a lubricant, reducing friction between moving parts and ensuring smooth operation. Additionally, it functions as a coolant, absorbing heat generated during the system's operation to prevent overheating. Hold fluid also provides structural support, maintaining the integrity of hydraulic components and ensuring they remain aligned correctly. It plays a crucial role in shock absorption, protecting the system from sudden impacts and fluctuations in pressure. Lastly, hold fluid acts as a sealant, preventing leaks and maintaining system efficiency by keeping the hydraulic fluid contained within its intended pathways.