I use a empty windshield wiper fluid bottle and then put oil bottle upside down inside the mouth of the gallon bottle and let drain for 3 > 5 days or more . Then repeat the process . You could then use the oil collected for mower(s) or other applications , but rinse out the wiper fluid bottle with water and let dry before use . Otherwise recycle the oil and the bottles too . They are picked up by garbage collector to be recycled .