i think thats whats its called. i was struggling w/ some rusted bolts on my catback install, so took it to a midas and had them loosen them up. guy sprayed zed45 on there and it had kind of a dry ice look w/ the white smoke and bolts came right off. dont know if it was the zed45 or the impact wrench that did most of the work, but he said one bottle costs $37.