Emulsifying oils are mixture of petroleum oil, synthetic components, emulsifiers and inhibitors of corrosion. They do not contain chlorine, PCB, PCT and heavy metals. With water, they create micro-emulsion with high stability, resistance against microorganisms and from it resulting long lifetime, stable pH, low foaming, high lubricating and cooling performance and protective ability. They fully correspond to the requirement for efficient lubrication and cooling liquid. EOP, beside these favorable attributes, finds its use especially where the requirement for increased conservational ability and suitable content of EP additives create favorable cutting environment.