[Dingfodgy]

Easy-Off! Yep, good ole fashioned sodium hydroxide oven cleaner. Spray it on let it set for a spell, but don't let it dry. Spray again if necessary to keep the surface wet for 10-15 minutes (do this on a cool-ish day in the shade if possible). Rinse off thoroughly. Start cuttin' and polishin'! Beware if there's any paint like in the cross bar or around the headlight....it'll take that off too- so you'll have to repaint.