United Arctic Blue Hydraulic Oil, ISO 22, is ideally suited for hydraulic equipment operating in extreme cold temperatures while also providing adequate year-round protection. This fluid is recommended for bucket trucks (cherry pickers), snowplows, garbage trucks, industrial and mobile equipment, and most hydraulic equipment that is exposed to a wide range of operating temperatures where reliability is critical. United Arctic Blue Hydraulic Oil has a high dielectric strength* for use in electrical service or tree-trimming bucket trucks.