CITGO Pacemaker SD ‘‘Super Demulsibility’’ Oils are high quality circulating lubrication oils, with superior oil/water separation characteristics, oxidation stability, and rust and corrosion protection specifically designed for steel mill applications. Available in viscosity grades 220, 320, 460 and 680. CITGO Pacemaker Oils exceed Siemens AG requirements for Morgoil® Advanced Bearing Lubricant “Super Demulsibility” specification.