I just learned about a way to clean nasty chrome that seemed ridiculous but turns out to be absolutely true. You’ll probably have to try it yourself to believe it. Wet the neglected chrome with a wet towel then rub it with wadded up aluminum foil. Polish with a dry towel then be amazed!
I just bought a used Schwinn Giraffe that is 29 years old. The chrome was looking pretty sad. I washed it then used my favorite chrome cleaner - “Never Dull.” This is wadding with light oil in it that I previously thought was great stuff. With a lot of effort it cleaned up the chrome reasonably well. I then read of the aluminum foil trick so I tried it on the Giraffe the next day. With much less effort I removed considerably more gunk. This was gunk that I couldn’t remove using a product made specifically for the task and applied with a lot of effort.
Crazy but true!