[Jrainman]

You can go to home depot they sell husky compressor oil , they have conventional oil , semi synthestic and full synthetic oils , you can use any of these oils , you should see a drain plug somewhere at the bottom or side of the compressors crank case , drain oil .there also should be a fill plug located high or top of the crank case , also there might be a sight glass on the side of the case somewhere fill new oill to 3/4 up the sight glass , if no sight glass fill to a little over half way up the crank case and your done , check belt tention also and Maintenance is done