Not sure of how many of you gents that need to derust parts, I just tried a process this week that a person suggested from another board, white vinegar, put in a plastic bucket, I put a set of lower rear shock mounts in for a `64 chevy truck, so they have 50 years of crust on them, I spent zero elbow grease, it cost me 1.93 for the vinegar and four days, when done I used a weak solution of dish soap and baking soda to neutralize the vinegar. before and after pics.