Hard water(iron)spots

[CleanMachine]

I have been detailing vehicles for a guy who has alot of iron in his area where he lives. He has numerous black 350s for his company and some are very very cloudy with the spots. Today I did one using DACP to get them off. Most came out except for a few little areas. What would be the best product to remover these . I have a small buffer but not a PC. Any products/procedures???????







Thanks, dave

[Accumulator]

I`d probably use AutoInt`s ABC system, claying during the "B" step, but it`d sure be a big job. Then protect with a good sealant so it`s not an issue everytime you do them.

[CleanMachine]

I agree witht he claying part which I do after the wash. It has to be buffed out for sure but I was trying to find the best product and method.