My car was in the exact same condition when I got it. I got a compressor and a cheapy sandblaster from
Harbor Freight, took the car apart and went at it. In my opinion, it's the only way to really deal with it. If I'd had the resources, I'd have taken it to a commercial sandblaster. I did it all myself and it was messy and nasty and hot and frustrating but I really got that metal clean. Then I ...