Abstract: The present invention relates to a modular combined grease oil system for lubricating moveable parts of a machine and for recovering oil for reuse. The system includes a lubrication unit for automatically applying a lubricant such as a grease to various points on a machine, such as the clamping unit of an injection molding machine, after a predetermined number of operation cycles. The system further includes an oil recovery unit for retrieving oil from at least one hydraulic unit to prevent leakage, for collecting the retrieved oil, for removing contaminants from the collected oil, and for transferring the oil to a storage tank for reuse. A method of operation of the system is also described.