Abstract: A two position drain valve or cock is installed permanently in the threaded drain plug opening of an automotive crankcase. The spherical rotary valve element is operated by a crank arm arranged exteriorly of the valve casing on a valve actuating rotary shaft. The crank arm is shifted between valve open and valve closed positions by a push-pull cable assembly including a manual lever pivoted to a mounting bracket which is installed under the hood of an automobile at a conveniently accessible location. Detent means is provided to lock the manual lever in a valve closed position. The shipping package containing the apparatus in kit form may be utilized to receive the dirty oil.