U.S. Approved MIL-PRF-5606H, British Approved DEF STAN 91-48 Grade Superclean * (European production only). Meets DEF STAN 91-48 Grade Normal (European production only). Equivalent to DEF STAN 91-48 Grades. Superclean * & Nor- mal (U.S. production only),French Approved DCSEA 415/A, Russian Analogue to AMG-10
NATO Code H-515* (equivalent H-520)
Joint Service Designation OM15* (equivalent OM-18)
* Superclean grades. The British specification DEF STAN 91-48 covers two grades (normal and superclean) of mineral hydraulic fluid which differ only in their cleanliness limits. AeroShell Fluid 41 is manufactured to meet the superclean requirements and thus it also meets the requirements of the normal grade.