FUNCTIONAL HF-580 is a light color, low odor additive package used to formulate antiwear hydraulic fluids with biodegradable esters or vegetable oils as base fluids. FUNCTIONAL HF-580 is also highly compatible in other base oils including saturated esters, PAOs and Groups I – III petroleum oils. FUNCTIONAL HF-580 does not contain zinc or heavy metals, provides oxidation/corrosion protection, extreme-pressure/anti-wear activity, foam resistance and resistance to water. FUNCTIONAL HF-580, when fully formulated to ISO 46 grade in high oleic canola base oil, demonstrates excellent wear performance and cleanliness in the Vickers 104C vane pump test.