Oil feeder is a device that is used to supply oil in engines or machines to keep their parts lubricated and running smoothly. Some popular synonyms of "oil feeder" include lubricator, oiler, oil dispenser, oil can, oil pump, oil reservoir, and oiling system. These terms are all used interchangeably to describe the same type of device or system. They are used in various industries, including automotive, manufacturing, and construction, to ensure that equipment is properly maintained and functional. No matter what term is used, the importance of oil feeders in maintaining the performance and longevity of machinery cannot be overstated.