I have a Black Subaru that is out side all the time. I have done med. and fine compound, #9, #21, and finished with #26 paste. After every wash there is always some surface spots etc and I want to hit it with something to do minor cleaning and bring back the gloss. I was wondering if a thin coat of #26 would remove the minor contaminants. Since reading about #20 I was thinking it would do the trick. There are so many new Meguiar's products in the consumer line that folks are talking up I also thought one of them may be the answer. My original thinking was to clean very little and restore shine with out removing the previous layers of product; maybe I'm wrong and I want to remove some of the old layers. Help, with what I'm sure is an easy Question.