Phillips 66 X/C 5606J Aviation Hydraulic Fluid (Formerly; 5606H) is a mineral oil-based, high viscosity index, ashless (zinc-free) antiwear hydraulic fluid designed to meet the severe demands of aerospace and industrial applications. It is currently approved for MIL-PRF-5606H and the newest MIL-PRF-5606J specifications.
This product has excellent oxidation resistance and outstanding low-temperature properties for use over a wide temperature range. It provides excellent wear protection for hydraulic pumps and motors, protects hydraulic system components against rust and corrosion, and is resistant to excessive foam buildup that can cause poor or sluggish hydraulic system response.
Very high viscosity index for use over a wide temperature range
Outstanding low-temperature properties
Excellent wear protection
Resists deposit formation and viscosity increase due to oxidation
Protects against rust and corrosion
Good foam resistance
Does not contain zinc or other heavy metals
This fluid is recommended for use in non-pressurized systems operating between -54°C and 90°C (-65°F to 194°F), and in pressurized systems operating between -54°C and 135°C (-65°F to 275°F) at pressures up to 3,000 psi. This product may be used in the following applications:
Aircraft and missile control systems, autopilots and shock absorbers
Auto wreckers, boom trucks and electrical service equipment (cherry pickers) where all-weather performance is required
Hydraulic systems that require a super clean fluid for extended service life and reliability
NOTE: Do not use these fluids in hydraulic systems with natural rubber elastomers.
Meets the requirements of U.S. Military Specification MIL-PRF-5606J, MIL-PRF-5606H (supercedes MIL-O-5606, AN-O-336, AN-VV-O-336 and AAF-3580) and U.S. Military Specification MIL-H-5606A (obsolete)