Hydraulic oils with a minimum zinc content, characterized by excellent filterability and high resistance to oxidation and temperature, are intended for hydraulic systems and hydrokinetic clutches. Shell Tellus S2 M 46 is a high-quality hydraulic oil, created using Shell's patented technology, which provides excellent physicochemical and functional properties in industrial applications and in various road and agricultural machines. Thanks to the high thermal and mechanical resistance of the oil, the formation of deposits is minimized, which translates into greater efficiency and performance of hydraulic systems.