I bought a 2013 sullivan palatek D375 portable compressor for media blasting. I have a RPB nova 3 respirator package with a coalescing filter. i know of the precautions i need to take with a setup like this and the need for a carbon monoxide alarm. What i can't seem to find is the oil that is least likely to kill me. ester, food grade, synthetic? i just cant seem to find anyone willing to tread that ice for me. planning on spending countless hours getting my breathing air through a screw compressor soaked in oil. whats the least awful way to do this oil wise?