For hot surfaces of about 160°C we unfortunately cannot recommend any of our pens. 160°C is unfortunately the range at which the plastic tips can melt. For oily and greasy surfaces, we recommend the edding 8750 industrial paint marker, the edding 750 paint marker or the edding 8300. However, it is important to note what type of oil or grease is involved and how thick the layer of grease is. The thicker the layer, the more difficult it is for the ink to bond with the surface and it may not be smudge-proof.