Put a folded paper towel over the oil area. Set your covering iron as high as it will go and put it over the paper towel, moving slowly back and forth. The oil will bubble out and get soaked up by the paper towel. Change the towel often, and keep doing this until no more oil gets on the paper towel. After you have a clean towel, do a final clean up with K2R. I have not tried this for this for 3 and 1, but it sure works great for oil residue from the engine, so I don't see why not.