I have always used windex on my chrome on all my vehicles,On windshields that are real buggy if you soak a paper towl with windex and lay it on the shields they will come off without scratching.As far as the paint goes I won a can of Honda polish on a poker run one year ,everybody laughed and said what are you going to do with that so I put it on the shelf for about 5 years.One day I ran into a friend of mine that has more vehicles than a museum,he had just ordered a case of Honda spray wax and told me that is all he ever used,oh and he owned a detail shop,now I use it on my bikes and cars quick easy and works great!!