Mineral base hydraulic oils have anti wear and anticorrosion additives. They are applied as power and motion transfer fluids in all hydraulic systems in normal operating temperatures. They lubricate movable elements: wing, axial, piston and gear pumps. They do not have negative impact on parts made of non-ferrous metals, they do not destroy, dissolve nor swell usual sealing materials of rubber and plastics. They are applied also for the lubrication of small and lightly loaded closed toothed gearing.