Methelyne Chloride based with a parafin wax that rises to the surface and acts as a sealant to stop the MethChloride from evaporating and allows the stuff to eat into the paint.

Wipe it off, strain thru window screen to filter out the paint chips, put the remainder back in the can and wash the clean metal with water to neutralize and you are done.

My neighbor owned the firm for 35 years and it is still the best out there.
Wear eye protection and use in an open airy place.