I just rebuilt my front end that was just caked with grease and dirt. I used Purple Power diluted 50% in a big tub. I soaked everything for a couple hours... scraped and scrubbed real good, then rinsed, then back in for a couple more hours... scrub/rinse, ect... Purple power removed the old paint and even looked like it started to eat away the rust. After a real good rinse and a hit with full strength PP on the stubborn stuff I put everything into the dishwasher... I put everthing that will fit in the dishwasher it works great and gets everything ready for whatever finish you want. I used Rustoleum rust converter and black Krylon semi gloss on my front end and although not correct everthing looks brand new.