Editing Lubricant (section)

==History==
Lubricants have been in some use for thousands of years. [[Calcium soap]]s have been identified on the axles of chariots dated to 1400 BC. Building stones were slid on oil-impregnated lumber in the time of the pyramids. In the [[Ancient Rome|Roman era]], lubricants were based on [[olive oil]] and [[rapeseed oil]], as well as animal fats. The growth of lubrication accelerated in the [[Industrial Revolution]] with the accompanying use of metal-based machinery. Relying initially on natural oils, needs for such machinery shifted toward petroleum-based materials early in the 1900s. A breakthrough came with the development of [[vacuum distillation]] of petroleum, as described by the [[Vacuum Oil Company]]. This technology allowed the purification of very non-volatile substances, which are common in many lubricants.<ref name=Fundamentals>{{cite book|title=Lubrication Fundamentals|edition=Third Edition, Revised and Expanded|author1=Don M. Pirro|author2=Martin Webster|author3=Ekkehard Daschner|publisher=CRC Press|year= 2016|isbn=978-1-4987-5290-9}} (print) {{ISBN|978-1-4987-5291-6}} (eBook)</ref>