Abstract: A method and apparatus for changing oil and measuring oil consumption in an internal combustion engine having an internal oil lubrication distribution passage system with an oil filter and oil reservoir which includes the steps of connecting an external, separable apparatus to the internal oil lubrication distribution system at a first point upstream of the oil filter and at a second point in fluid communication with the oil reservoir; removing spent oil from the oil reservoir and measuring the amount removed; introducing a measured amount of fresh oil appropriate for the internal combustion engine into the oil reservoir; and calculating the difference between the amount of fresh oil introduced to and the spent oil removed from the oil reservoir.

Abstract: Quick connect coupling adapters for facilitating simplified rapid oil change in an associated internal combustion engine, including a drain opening adapter having an integral body with a central throughbore and a branch throughbore angularly oriented thereto. The adapter includes appropriate means for attaching an end of the branch throughbore to the drain plug opening and means for sealingly attaching the drain plug to one end of the central throughbore. An oil conveying hose is attached to the other end of the central throughbore. The oil conveying hose includes a quick connect coupling releasably attachable to an external pump device. An additional oil fill adapter is positionable in a suitable engine opening such as the dipstick tube or oil fill opening in the valve cover. The oil fill adapter includes a central oil conveying body having an inlet and an outlet means for attaching the outlet in the engine opening, and a fill hose attached to the inlet.

Abstract: A process for high speed oil change in an internal combustion engine having a crank case with moveable parts and with oil pans modified to include a through bore and an appropriate associated coupling member.