This oil is a selected fraction of refined mineral oil used for lubrication of moving surfaces,usually metallic,and ranging from small precision machinery such as watches,to the heaviest equipment. Lubricating oils usually have small amounts of additives to impart special properties such as viscosity index and detergency and range in consistency from thin liquids to grease-like substances. In contrast to lubricating greases, lube oils do not contain solid or fibrous materials.
