Eastman Turbo Oil 2380

Eastman Turbo Oil 2380 is a 5 cSt synthetic turbine oil widely used in commercial aviation. It is qualified and approved for MIL-PRF-23699 STD (Standard) class and SAE AS5780 SPC (Standard Performance Capability) class. It offers a balanced combination of oxidative and thermal stability and good low temperature characteristics. Its accessory performance extends on-wing accessory life and improves reliability, and it neutralizes the effects of copper, giving metal passivation with reduced oxidation and sludge formation.

Typical Properties

• Density (15 °C) 0.9749 kg/L
• Kinematic viscosity 4.97 mm²/s at 100 °C, 24.2 mm²/s at 40 °C, 7950 mm²/s at −40 °C (35 min)
• Pour point −57 °C; flash point 265 °C; total acid number 0.43 mg KOH/g
• Evaporation loss (6.5 hours, 204 °C) 3.0%
• Load carrying ability (IAE gear machine, reference oil A): 99% at 2000 rpm, 86% at 6000 rpm
• Rubber swell (192 hours): nitrile (130 °C) 10.5%, silicone (175 °C) 10.5%, Viton (200 °C) 22.5%