Shell Lubricants’ Shell Tellus Oil STX is a multigrade hydraulic fluid free of heavy metals that will perform in extreme conditions. The zinc-free, ashless fluid features high shear stability and wide temperature range, and it was formulated with Group II base oils with additive technology. The fluid’s 160 viscosity index allows a single oil to operate in a range of environments and reduces the number of hydraulic grades. Fast start-up can be achieved through the fluid’s low temperature performance, while improved equipment protection and retention of fluid viscosity properties are also offered. Suitable applications include the mining, farming, construction, and marine industries.