MIL-PRF-17331Revision LLubricating Oil, Steam Turbine and Gear, Moderate ServiceLoading PDF document...This may take a momentDocument Revisions (8)Revision Revision L Interim Amendment 1 (amendment incorporated)Revision Revision H Amendment 2Revision Revision H Amendment 3Revision Revision HRevision Revision JRevision Revision J Amendment 1 (amendment incorporated)Revision Revision L (selected)Revision Revision K💬