2000 Mazda Millenia oil in supercharger

To 2carjack concerning the oil in the supercharger. You said that possibly the engine had pushed the oil through the pcv system. I had already taken the pcv system out of the possible problem by disconnecting the pcv valve and letting the engine run with it un plugged. I had pulled the cover on top of the intake chamber and saw oil in there, so I cleaned it and put the cover back on and let the engine Idle for a few minutes in my stall, then shut the engine off and pulled the cover back off and there was oil inside again. The engine does not smoke after it starts and run for a while. It clears out. But I'm not sure but I don't think that there should be any oil in the supercharger its self, I'm talkiing about in the actual schroll its self because other than oil that lubricates the charger its self there is nothing before the charger but intake air. I work at a GM dealer ship but I'm not that familiar with mazda with supercharger. Thank you for any answers to this problem! Only reason i'm trying to fix this one is because it's a challange and I'm trying to help a divorced mother with no money and alot of bills. Have a good day and thank you for replying.