Maintaining the oilless air compressor

here's a simple video of how to maintain your oilless air compressor, even though it does not requires oil, anything that has friction requires oil, and makes the motor runs easier than hard, listen to the compressor as it run at the start, and the end.... big difference, don't own a oilless compressor if you use it everyday purpose, this compressor was trash picked and i use it when i need air in small tires get a real compressors, any air compressor that marked OIL-LESS are useless, if you want a good compressor, get a compressor that uses oil, not those oil-less junk!! i trash picked one, and it run really hard, taking a long time to fill the tank (15 minutes) to 100 psi, i took it apart and added oil inside the cylinder, and put it all back together, and it ran really smooth, and it took less than 4 minutes to fill the tank to 100 psi, these oil-less compressors are a joke