Turbines are defined as rotating prime movers, where the energy of a fluid is transformed into mechanical energy, generally intended for production of electricity or propulsion. Steam, hot gases produced directly from burning fuel and water are the commonly used fluids. Turbine oil must lubricate the shaft bearings, remove heat, operate the servomechanisms of regulating valves and lubricate the gear reduction units, if present. Eni product line satisfies the needs of lubrication of all types of gas, steam and hydraulic turbines, also in combined cycle plants. The partnership with top class manufacturers made it possible to improve formulations over the years, guaranteeing higher levels of performance. Nowadays OTE and OTE GT are a quality reference in a market oriented to very high levels of applied technology.