I have been using a product called Bugslide and the more I use it the better the shine and the bugs just wipe right off, just like the name the bugs and dirt just slide off with a clean rag

 

HMMM...... now if anything would leave white residue, sounds like this stuff would. I guess it really doesn't belong in the bathroom huh?

 

I have been using a product called LIQUID GLASS for many years on show cars and my bikes. After trying everything out there, a guy at at a car show turned me on to it. It is a polish that does not build up like wax but molecularly bonds to itself each time it is applied. It goes on and off easy and can be used on ALL metals. It gives you a wet shine. It's costs more than some others but the results are worth it. I found it to be a great product that has not changed over time. Just a little harder to find.