D-A Soluble Oil w/ Biocide™ is a premium general purpose emulsifying metalworking lubricant that provides excellent cooling and lubricity in a wide range of machining operations where heat dissipation is critical. It is formulated with high-quality base oil, select emulsifiers, and coupling agents to promote the formation of exceptionally stable, non-foaming, homogeneous emulsions in both soft and hard water.