The most important function of lubricants is the reduction of friction and wear and in some cases, the relative movement of two bearing surfaces is only possible if a lubricant is present. In times when saving energy and resources and cutting emission have become central environmental matters, lubricants are increasingly attracting public awareness. Scientific research has shown that of gross domestic product could be saved in terms of energy in Western industrialized countries if current tribological knowledge, . the science of friction, wear and lubrication, was just applied to lubricated processes
