Castrol Brayco Micronic 756 Aircraft Petroleum Hydraulic Fluid, MIL-PRF-5606H

Genuine Castrol Brayco Micronic 756 Aircraft Petroleum Hydraulic Fluid (meets  MIL-PRF-5606H military specification), repackaged into smaller packages from an original 5 Gallon pail. 
Individual funnel size: 3.3 inch (diameter), 3.3 inch (height) For 1-Gallon Tin Pail, it is normal if you find the outside pail is a little discoloration or a little bump. Little discoloration is pretty common due to the storage. Little bump may happen during the shipping, since the tin pail is designed this way to absorb energy.  
Castrol Brayco™ Micronic 756 is a petroleum base, low viscosity, red colored ISO Grade 15 hydraulic fluid for aircraft, missile and ordnance use. It is a blend of highly refined, selected base stocks with suitable additives, which yield a product with exceptionally good viscosity-temperature characteristics, good an ti-wear properties, low rubber swell, and excellent oxidation stability. The use of a polymeric viscosity index improver of low molecular weight provides stability in comparison to typical hydraulic fluids.Brayco Micronic 756 is designed for use in aircraft, missile, and ordnance hydraulic systems where long term stability and a low temperature fluid is required. Brayco Micronic 756 is filtered to meet rigid particle contaminant requirements. It is intended for use in automatic pilots, shock absorbers, brakes, flap-control mechanisms, missile hydraulic servo-controlled systems and other hydraulic systems using synthetic sealing materials. Fluids compounded to meet this specification undergo certain changes with use. Further information relative to usable life may be found in Fainman and Mackenzie, "The Characteristics and Performance of Specification MIL-H-5606 Hydraulic Fluid," Lubrication Engineering 22234 (1966).