craftsman 12 gallon 1.25 air compressor has oil in tank.
(Blue ridge summit Pa,)
Hi, I received this craftsman 12 gallon 1.25 air compressor 2 years ago for Christmas. I have only used it maybe 8 times to put air in tires. Yesterday after the tank fulled up. I noticed the oil level had dropped down to empty. I had just checked it before turning it on and it was fine. So i turned it off and opened up the drain valve to let out the air. I got a hand full of oil. Would you have Any ideal of what would cause this to happen? I really appreciate your help. craftsman 12 gallon 1.25 air compressor.