Stuff works awesome. I bought a new set of Polished 20" wheels for my Impala and used the Zoopseal on them befpre installing them on the car. Over two years after putting the wheels on the car and not touching them with polish, they looked just like NEW. However, you must have the parts polished PERFECT before using it because once you put it on, you can not use regular aluminum polish any longer on the metal. This stuff puts a thin micro layer of sealer on the aluminum to seal the pores from oxidation. It is very good stuff. I have also talked to many guys at car shows that used it on their street rods polished engine parts.