My boyfriend's mom uses this stuff called Lestoil. It gets everything out of clothes, food, grease, oil, and sauce stains. It's very helpful. Just use a small "dime sized" drop on the spot and just barely rub it in. You don't want to use too much because it can be rough on clothes. I also don't recommend rubbing the fabric together with the oil, it'll do it's job without much help. It has a lot of garage/commercial uses as well, so its not the gentlest thing out there, but it works great on oil/grease.
You can find it at the grocery store, most likely. If you can't, try auto shops. Good luck. (02/08/2005)
RE: Black Grease Stain on Polyester Down Coat
You might want to try a hand cleaner (DL, etc.) like people use when they work on cars and other greasy things. I always use some cheap brand I bought at Dollar General, and I've never had a grease stain I couldn't remove, even if the clothes had been through the drier. It's also never stained anything I've used it on, and I've used it on several kinds of material. I put it on and rub the material together for a couple of seconds, sit aside for a few minutes, then wash in hot water if the color can take it. You can also let it sit for a week or so, it's never hurt my stuff. If this doesn't take it all out, repeat. (02/08/2005)
A web company aloetherapy.com carries a product called Orange Clean that has removed some amazing stains at our house. Their products are all natural and they will give a money back guarantee. It's not expensive and I use many of their products and have absolutely no complaints. (02/09/2005)
RE: Grease Stain on Polyester
I've been able to get grease/oil stains out with Dawn, most of the time. If that doesn't work a hand cleaner called GOJO works really well too. It's meant for mechanics and has some grit in it so it's not the best for delicate fabrics. Good luck.