I have a Ingersoll Rand- Cooled Rotary Screw Air Compressor Model UP6-7.5TAS-125 with only 17 hours use. While walking past the compressor a few days after it had last ran I noticed oil on the floor underneath the compressor. Looking for the source of the oil I found it had ran out from inside of the air filter. Any ideal what the (cause & fix) might be.