On alloy parts I use Mothers Polish. It will make dull alloy parts look new and has a component in it that keeps the oxidation from coming back right away . I clean my bikes frequently but only polish once or twice a year. I have also restored VERY rusty bikes with super fine steel wool and to me it works well on chrome socks (fork tips and stays) . I put Mother’s on the steel wool and give it some elbow grease. Check out my Rusty Resurection on my blog at joesvintageroadbikes.wordpress. It took a lot of hours but the end result is pretty cool. It is a wonderful bike with a patina look to it that tells a story of being left in a field in a Central California beach town . Joe