How do you remove oil stains from upholstery fabric?

To remove oil stains from upholstery fabric, start by blotting the stain gently with a clean cloth to absorb excess oil. Sprinkle cornstarch or baking soda on the stain and let it sit for 15-20 minutes to absorb the oil, then vacuum it off. If the stain persists, mix a small amount of dish soap with warm water, dab it onto the stain with a cloth, and blot until the stain lifts. Rinse with a damp cloth and let the area air dry.