The first thing you need to do is to get rid of excess oil or grease. This should be easy. All you need to do is blot the oil or grease spot using a paper towel. If blotting does not help, try scrubbing to remove excess oil or grease.
With the glossy side up, place a portion of brown paper bag on the stain and press it with the tip of a warm iron. When the brown paper gets warm, it will absorb the grease from the stain. Lift off the brown paper.
Some of the stain will still be remaining on the car upholstery. Apply some carpet shampoo on a moist sponge and scrub the stain with this sponge. This will leave behind some shampoo foam. Get rid of the shampoo foam using a paper towel. This method is best to get rid of oil or grease accumulated on the car’s carpet.
You will have to use a different technique to get rid of oil and grease from car fabrics. As earlier, blot or scrape excess oil or grease using a paper towel.
Put an absorbent cloth on the stain. Leave the cloth on the stain for a few hours. The cloth will absorb most of the oil or grease.