[HoosierDaddy]

I've been thinking about this. Admittedly I have a very limited understanding of even the simplest air systems on these coaches. It was not unusual to see a fine oil mist emitted from an air motor when there is an oiler upline. My concern would be that anywhere there is air exhausted from the system there will be a bit of oil. You may only experience an odor and that may be acceptable most of the time.