What type of hydraulic oil is recommended for a 12 cubic foot multiquip mortar mixer?

The Multiquip Essick 12 CF Hydraulic Drive Mortar Mixer (Model EM120HYD) utilizes a hydraulic drive system to handle demanding mixing tasks. While the manufacturer's documentation does not specify a particular type of hydraulic oil for this model, it is generally recommended to use a high-quality, ISO 32 or ISO 46 hydraulic oil for such equipment.