Sunoco Spindle Oil #15 is a mineral based lubricant of high-quality and low viscosity with additives that impart good resistance to oxidation and protection from rust and corrosion. Spindle Oil # Series is a line of Sunoco Lubricants that are premium performance products primarily designed for the lubrication of high-speed spindles in machine tools. They are also suitable for use in oil mist, pressure and bath lubrication of plain or roller bearings and their associated clutches. 15 represents the thickness of the oil which is an International Standards Organization Viscosity Grade (ISO VG) 15.
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