@Leeatl; I hadn't thought of that. Your reply prompted me to google removing oil and water from compressed lines. I stumbled upon the PDF with a total explanation of the process and how to obtain output air purity at 'food handling grade use, scientific and medical grade use as well. I will indeed purchase a tank air pump.
However; The DIY guy in me has accepted the challenge of making a home made (dryer, chiller, condensation trap, oil and water vapor dry particulate capture system) Just to see if I can