This specification covers a trimethylol propane triheptanoate fluid (See 8.1) representative of gas turbine engine oils.

This fluid has been used typically to evaluate the ability of elastomeric and other polymeric materials to conform to designated requirements after contact with, or immersion in, Mil-L-7808 and similar lubricants at specified time and temperature as required by the material specification, and its use is limited to such applications. This fluid is not intended for operational use in gas turbine engines (See 8.1).