Air compressors come in a variety of sizes, styles, and weights, but in practice, the only real options are to use an oil-lubricated compressor or choose an oil-free design.
Oil Air Compressors - oil-lubricated air compressors are durable for heavy-duty use. These compressors are effectively silent, making them great for quiet neighborhoods.
You must know that the oil used in oil-lubricated compressors is not motor oil. It is a special detergent-free, synthetic blend explicitly made for the ball bearings inside the compressor.
Oil-free air compressors are lubricated. The Teflon-based lubricant was applied during the manufacturing process. These air compressors are mostly maintenance-free as well.