 and it cleans very well. It's like an engine degreaser, but it's going to remove grease, dirt, dust. It's got an anti-static in there to try to prevent dust from building up in there. So it's worked well for me on both the home air conditioner and on cars to clean. I sprayed some on our Tahoe in between there to try to clean that off, and it really cleaned it well. Is that a big old copper radiator in there? Yes.