Good ole BRAKE FLUID will to the trick.
Years ago I was into buying computer equipment from sealed bid goverment auction thru the GSA.. lots of excess stuff from the 2000 census, mostly.. altho there were some cool gadgets that came out of NOAA.
Anywhoo.. the goverment is fond of writing on things with a big fat permenent magic marker.. which can really knock a few dollars off the resale value of this stuff on eBay, so I was using just about everything I could try.. from choke and carb cleaner, to simple green and mean green.. the stuff ended up comming off, but it took some work.
As luck would have it, I was picking up a buddies car from the garage and I saw a guy whiping road paint off the side of a customers car. Now, road paint is some heavy duty paint.. and this guy was taking it off with little to no effort.
Despite the sign that read "No customers in the garage area" I just had to know what he had in that big white bottle.. it was plain old brake fluid.
I went back to my office (after a pit stop at Auto Zone) and gave it a try, and it worked great.
Since then, i've used it to take all sorts of crud and marks off of lots other stuff.. even tree sap dripped on a nice new car.
If you own a Stovebolt, my guess is you've already got some brake fluid around the house.. try it on a small spot and see what you think!
