To ensure that the pump’s hydraulic power is transferred to the cylinder with as little loss as possible, it is absolutely essential to use the right hydraulic oil. YORK hydraulic oil guarantees all moving parts are optimally lubricated, while protecting metal surfaces against corrosion. When developing its hydraulic oils, YORK places great emphasis on compatibility with seals, stable viscosity behaviour and optimal shear stability, as well as keeping formation of foam to a minimum and delivering good resistance to ageing.