Patent ID: 8114822

Claim:
A soluble oil composition which consists essentially of: a) a base oil selected from the group consisting of naphthenic oil; hydrogenated polyolefin oils; poly-alpha-olefins; alkyl esters of dicarboxylic acids; complex esters of dicarboxylic acids; polyglycol and alcohol; alkyl esters of carbonic or phosphoric acids; polysilicones; fluorohydrocarbon oils; homo- and inter-polymers of C 2 -C 12 olefins; carboxylic acid esters of both monoalcohols and polyols; polyethers; silicones; polyglycols; silicates, alkylated aromatics; carbonates; thiocarbonates; orthoformates; phosphates; phosphites; borates; and halogenated hydrocarbons b) an emulsion stabilizing amount of a neutralized carboxylic acid obtained from tall oil and/or component thereof; and c) from 1 to 10 weight percent of at least one overbased calcium sulfonate; and, optionally, d) at least one additive selected from the group consisting of extreme pressure agent, anti-wear agent, emulsifying agent, rust preventive, corrosion inhibitor, anti-foaming agent, anti-oxidant additives, surface active agents, friction modifier, stabilizing agents, and mixtures thereof.