Yeah not a good idea to polish a steel frame. For alum. frame, wheels,hubs,etc., your local truck stop has some great stuff, I think it,s called easy polish it,s a liquid,small white bottle. Some truck stops have blocks of ruese, you take your knife and slice it off, put shavings into a bottle of mineral oil if I remember right, you can also add some silicone liquid. It only takes a few minutes per wheel and hub, dirt doesn,t stick as easy and it,s faster to clean the bike.