wax/protectant for muffler

[Locomotive]

This may seem like a silly question, but most of my other bikes haven't been in a category where they needed or deserved this kind of attention...

For the chrome outer main bodies/covers of the mufflers, is there any sort of protectant that can be applied that won't either evaporate off or cook on due to the heat? I am wondering whether ordinary automotive or motorcycle paste wax isn't up to the heat, but I have no experience one way or another.

Thanks

[Jims99]

I have always used chrome polish ( turtle wax or white diamond)
I'm sure it doesn't last as long on pipes, but I do it once a week. I still get a little rust wanting to form, but I live 1 mile from the beach.

[Bighead]

Never used anything but soap and water on mine and they still look good after 21 years. If I get a spot of something on them that wont come off with washing I will use some metal polish on that spot.

[Pete]

 Been using in-expensive car cleaner/wax on them for years.
Does a good job cleaning and inhibits stains and rust.
And yea it does cook off so use it often.

[Locomotive]

Thanks for all of the suggestions. The idea of Rain-X  (for windshields), which makes moisture and dirt slide off, also crossed my mind. What made me think of that is that on some other-make forums I was reading about people using Pledge furniture polish, which has silicone-based silanes and siloxanes, and the Rain-X has the same active ingredients, only with less other stuff. I may try it on an inconspicuous spot before I try it in visible spots.