When I took my xB in for its first oil change some monkey scratched up the drivers sill with sandy sneakers. I objected and they offered a detail or another free oil change -- I opted for the detail. The detailer poured a little solvent onto a cloth and did a single wipe over the area and I got down to check on the scratches (idea being to melt the clear coat into the shallow scratches). The first two solvents he tried didn't do the job and on the third the smell was pretty strong, but it worked (the residual fumes were very unpleasant driving home). I'm trying to find out what that last solvent was, definitely stronger than acetone. Toluene? Something else?