Abstract: An organization wherein a flexible bag includes a upwardly extending neck formed with a mounting means in circumferential surrounding relationship relative to an upper opening of the bag for securement to a bottom surface of a crank case drain pan. The bag structure includes a mounting ring for receiving the drain plug from the crank case, as well as a valve tube and associated valve plug to direct fluid from the bag structure subsequent to a draining procedure. Modifications of the bag structure include a glove bag pouch directed within a side wall of the neck for receiving an individual's hand for permitting replacement of the crank case drain plug.