BP 2380 Turbine Oil (Case of 24 Quarts). BP Turbo Oil 2380 is a 5 cSt synthetic lubricant that is approved against US military specification MIL-PRF-23699F-STD, and UK specification DEF STAN 91-101/2 (replaced DERD 2499). This lubricant provides a balanced combination of thermal and oxidation stability, load carrying capacity, lower volatility and has the best low temperature flow characteristics of all 5 cSt turbine oils.