Is it true that hydraulic systems utilize oil instead of water due to its self-lubricating properties?

Hydraulic systems commonly utilize oil rather than water primarily because oil possesses excellent self-lubricating properties, which significantly reduce friction and wear in the system's components. This lubrication is crucial for ensuring smooth operation and longevity of the machinery. Oil also has a higher viscosity and better thermal stability compared to water, allowing it to perform effectively under varying temperature conditions without losing its lubricating capabilities.

Moreover, the use of oil helps to prevent corrosion within the hydraulic system, while water can lead to rust and other forms of degradation. In addition, hydraulic oil is better at carrying contaminants away from sensitive parts of the system, which is essential for maintaining performance and reliability. Overall, the properties of oil make it the preferred choice for hydraulic applications, thus supporting the assertion that hydraulic systems utilize oil instead of water for optimal function and maintenance.