Oust Speed Oil is a prepriortory lubricant manufactured from straight chain Carbon molecules with at least 6 carbon atoms being used as a boundary layer lubricant. Under high temperature created from frictional drag these Molecules form a metelic soap which become a tenacious lubricant film of increased viscosity to reduce the wear in the boundry region. All Moc Series Bearings come lubricated from the manufacture with Oust Speed Oil and should be serviced every 50 hours with the same lubricant for the longest life.