AeroShell Fluid 4
AeroShell Fluid 4 is a mineral hydraulic oil with very good low temperature characteristics and capable of operating over a wide temperature range. AeroShell Fluid 4 is composed of a mineral oil base stock and a complex additive package which results in a product with excellent low temperature flow and anti-wear properties, exceptional antifoam characteristics, and excellent oxidation stability. AeroShell Fluid 4 is dyed red.
Detailed Product Description
AeroShell Fluid 4 is intended for use as a hydraulic fluid in undercarriage retraction mechanisms, flap jacks and control mechanisms, brakes, shock absorbers, automatic pilots, oleo legs, tail wheels, servo units, etc. AeroShell Fluid 4 is also suitable for lubricating de-icing pumps and gearboxes.
AeroShell Fluid 4 should be used in systems with synthetic rubber components and must not be used in systems incorporating natural rubber. The latter systems require castor base fluids with which AeroShell Fluid 4 is not interchangeable.
AeroShell Fluid 4 is compatible with AeroShell Fluids 31, 41, 51, 61 and 71, although it is not recommended that AeroShell Fluid 4 is used in systems which require the use of a superclean fluid nor should it be mixed with superclean fluids for operational reasons.
Chlorinated solvents should not be used for cleaning hydraulic components which use AeroShell Fluid 4. The residual solvent contaminates the hydraulic fluid and may lead to corrosion.
Specifications, Approvals & Recs
- Meets MIL-H-5606A (US) (Obsolete – see AeroShell Fluid 41)
- Meets DTD 58.5 (Obsolete - see AeroShell Fluid 41)
- Approved DEF STAN 91.48 Grade Normal (European production only) (British)
- Approved DCSEA 415/A (French)
- Analogue to AMG-10 (Russian)
- NATO CODE H-520 (European production only)
- Joint Service Designation OM-18 (European production only)