I also use Dawn dish washing detergent to spot treat stains, including oil. I mx it with water and brush it on with a toothbrush. Then I put it in the washing machine with cold water, agitate 15 seconds mre or less, and let the item soak overnight. Of course you can't do that with the quilt, so I'd try putting paper towels underneath, brushing the spot with. dawn, and pouring with cold water and blotting to absorb the water. Good luck!