Believe it or not CLR and a ScotchBrite pad works great, but you need to test it on a small area. I bet it would work really well, I did the whole outside of my truck to bring out the original patina, but there isn't a lot of paint left in spots. Still, where there is paint it took off all the oxidation!


1946 GMC Pickup - S-10 Frame, 455 Buick, TH400, original patina.

My 46 GMC on Photobucket