Hydraulic oils

Often, many types of hydraulic oils are made by the purification of base oils, which in turn are the product of processing conventional oil fractions. In the manufacture of hydraulic oils, various additional additives, called functional additives, are used.
When selecting hydraulic oil, be sure to check the manufacturer's recommendations: requirements for specifications or approvals of the original equipment manufacturers, viscosity class, information on the recommended products of different manufacturers (from the instruction manual), type of lubrican
Can fluids with different compositions be mixed