Eastman Turbo Oil 2389 (formerly BP 2389)
Eastman Turbo Oil 2389 is an advanced gas turbine lubricant that has a viscosity of 3 centistokes @ 99°C (210°F) which meets or exceeds the requirements of U.S. Military Specification MIL-PRF-7808L Grade 3 and incorporates a level of technology from Type II (5cSt)
commercial turbine lubricants.
Eastman Turbo Oil 2389 thus affords the military operator the lower viscosity advantage of MIL-PRF-7808L Grade 3 oils while providing the higher quality advantages of the Type II commercial oils, especially with respect to better thermal and oxidation stability. Eastman Turbo Oil 2389 is fully approved against MIL-PRF-7808L Grade 3 and carriesQPL reference 1M-1 or 1P-1. Eastman Turbo Oil 2389 commercial application is predominantly for helicopter turbo shaft engines and for certain
accessories operating in extremely low environmental temperatures in conventional jet aircraft equipment.
This lubricant combines the thermal and oxidation stability of our commercial 5 cSt synthetic oil (Eastman Turbo Oil 2380) with the ability to flow at extremely low environmental temperature. In addition, it has gear-carrying ability equal to or better than other approved MIL-PRF-7808L Grade 3 oils. Eastman Turbo Oil 2389 thus affords the military operator the lower viscosity advantage of MIL-PRF-7808L Grade 3 oils while providing the higher quality advantages of the Type II commercial oils, especially with respect to better thermal and oxidation stability.
Eastman Turbo Oil 2389 has been approved by a wide range of engine and accessory manufacturers for their applicable equipment, including: Rolls Royce Ltd, Rolls Royce/Allison, GE, Pratt & Whitney, Pratt & Whitney Canada, Honeywell, Hamilton Sundstrand, CFMI, MTU, Solar and Turbomeca.
A major advantage of Eastman Turbo Oil 2389 is its ability to limit vapor-phase deposits. With some competitive oils, heavy deposits have formed where the oil mist and vapors come in contact with hot engine surfaces resulting in migrating deposits.
Eastman Turbo Oil 2389 provides load carrying ability, as measured in the Ryder Gear Test well in excess of requirements established by the engine and equipment manufacturers. Long life of bearings, gears, and other highly loaded lubricated surfaces is thus assured under normal operating conditions.
C L E A N L I N E S S : Minimum formation of varnish or sludge deposits is one of the characteristic advantages of Eastman Turbo Oil 2389. Long periods of severe operation are possible without the danger of scavenge pump screen plugging or the corrosion that often accompanies excessive deposits.