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AeroShell Fluid 41 is intended as a hydraulic fluid in all modern aircraft applications requiring a mineral hydraulic fluid. AeroShell Fluid 41 is particularly recommended where use of a "superclean" fluid can contribute to improvements in component reliability, and can be used in aircraft systems operating unpressurised between –54°C to 90°C and pressurised between –54°C to 135°C.
AeroShell Fluid 41 should be used in systems with synthetic rubber components and must not be used in systems incorporating natural rubber.
Refer to the General Notes at the front of this section for further information.
AeroShell Fluid 41 is compatible with AeroShell Fluids 4, 31, 51, 61 and 71 and SSF/LGF.
Chlorinated solvents should not be used for cleaning hydraulic components which use AeroShell Fluid 41. The residual solvent contaminates the hydraulic fluid and may lead to corrosion.
U.S. Approved MIL-PRF-5606H*
(both U.S. and European production)
British Approved DEF STAN 91-48 Grade
Superclean* (European production
Meets DEF STAN 91-48 Grade
Normal (European production only)
Equivalent to DEF STAN 91-48
Grades Superclean* & Normal
(U.S. production only)
French Approved DCSEA 415/A
Russian Analogue to AMG-10
NATO Code H-515* (equivalent H-520)
Joint Service Designation OM-15* (equivalent OM-18)
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.