As per the thread title my air compressor has become really noisy, I'ts never been particularly quiet but the noise was within an acceptable limit but the last few times I've used it it has become really loud. I plan on putting it on some rubber feet and maybe building an enclosure for it but just wondered as to why it has developed this issue, It builds up and holds pressure the same as it always has. Would an oil change help or are there any other things I should check in the interim? hope you can help