I am sure, that the 797 oil is a turbine oil and ISO32 grade oil. We use DTE ISO32 oil for the hydraulics and use 68 slideway oil for the oilers, except for the DMG mill, that uses a special grease for the linear rails. The Mobil 732 for example, is used in turbine type oil compressors and will replace what you have been using. Talk to your Mobil oil rep or local distributor , and they will give you the advice you really need.