Ready recommends using only a premium grade of hydraulic oil.

The H-1 pump is available in six standard sizes. Each pump has four ports to activate up to four identical H-2 units. The quantity, size, and stroke length of the H-2 units hosed to each pump determines the size and oil volume of the pump needed. Pumps can be up to six feet away from H-2 units. This allows you to free up critical die space and balance die loads.