[header] How to remove oil stains from carpeting [title] Cover the stained area with baking soda or corn starch. [step] Sprinkle the powder liberally and don't worry about using too much. Both baking soda or corn starch are absorbents that will " soak up " moisture, especially oil. 
They will not stain or damage carpeting. [substeps] One advantage of baking soda or corn starch is that they are very inexpensive.