Here's one for you. Have (had??) a boatload of Chrome and Glass Cleaner (Sorry, is now NLA) from an Amway distibutor that quit and I bought back the inventory. Never had use for it until I got my "scooter". Tried it on the chrome piece mounted on the fuel tank in front of the riders seat and the pipes that had some surface scratches. Took out all the scratches on pipes (as well as some boot marks) and reduced the scratches on the tank chrome by about 50%. Next tried on the rear wheel (Agitator). Brought it back to new shine. If you can find a distributor that still has some, offer him/her $.50/tub. The stuff is very hard (like polishing clay) and last forever.
P.S. Was in the paint industry for 15 years. Watch out what you use on your wheels and near rubber hoses. Chlorine and hydrocharbon chemicals will pull the "moisture" out of your rubber and dry-rot the heck out it.