Considerations include:

Turbine Type: Steam, gas, or hydro turbines have different requirements.
Operating Conditions: Temperature ranges, load, and pressure.
Viscosity Grade: Must match manufacturer’s specifications.
Additive Package: Necessary additives for protection.
Compatibility: With seals and materials in the turbine.
Environmental Regulations: Compliance with local laws.
Selecting the right oil ensures optimal performance and longevity.