In order to keep your air compressor in great working shape, it is essential to change your air compressor oil on a routine basis. Air compressors use oil for lubrication and cooling. When you change your compressor oil, you should always start by turning the compressor off and allowing it to completely cool down. Next, place a pan underneath the drain plug. With the pan in place, you can drain out the old oil. Be sure to allow enough time for all of the oil to drain out. A company offering compressor parts in San Jose can provide you with compressor oil and a variety of other components for your compressor. To learn more about changing air compressor oil, check out this video from expertvillage.