Castrol Aero™ 40 is a high-quality, mineral-based MIL-H-5606 hydraulic fluid for landing gear shock struts. It contains a highly shear-stable viscosity index improver, an anti-oxidant, anti-wear agents and an approved EP additive that reduce martensitic streaking of landing gear outer cylinders and galling of shock strut upper bearings.
Features
- Mineral-based, MIL-H-5606 type hydraulic fluid
- Highly shear-stable viscosity index improver
- Approved EP additive against martensitic streaking and galling
- Compatible with seals, hoses and paints normally used in shock struts and dispensing equipment
- Viscosity index 344; pour point -57 °C (-70 °F); flash point (open cup) 108 °C (225 °F)
Applications
- Landing gear shock struts
- Use with approved MIL-PRF-6083 and other MIL-H-5606 qualified hydraulic fluids
Specifications / Notes
- Douglas Aircraft Specification DPS 3.334 (Douglas stock no. DPM 6176)
- Alternative to Boeing Service Letters 707-SL-12-2, 727-SL-12-2, 737-SL-12-2 and 757-SL-27-15-B (EP additive addition)
- Not fully compatible with synthetic gas turbine lubricants or phosphate-ester hydraulic fluids
| Packing | 1 Qt or 5 Gallon |