What is a benefit of using synthetic hydraulic fluids compared to conventional oils?

Synthetic hydraulic fluids offer several advantages over conventional oils, one of which is enhanced oxidation resistance. This property is critical in hydraulic systems as it ensures that the fluid maintains its performance even under high temperature and pressure conditions. Oxidation can lead to the formation of sludge and varnish, which can impair the operation of hydraulic components, reduce efficiency, and increase maintenance costs.

By utilizing synthetic fluids, systems benefit from prolonged fluid life and stable performance, reducing the frequency of oil changes and lowering the risk of system failures due to degraded lubricants. This characteristic also helps in maintaining the cleanliness of the hydraulic system, thereby prolonging the lifespan of components and improving overall system reliability.

In contrast, while synthetic fluids might be more expensive and can potentially offer better lubricating properties or reduced environmental impact, the standout benefit highlighted in the context of the question is their superior oxidation resistance, making them particularly suitable for demanding applications where performance consistency is crucial.