I have heard nothing but good feedback about this stuff. It is huge in the Harley world. With all that chrome on those bikes, and many of them being hardcore riders, riding year round, it must work. It is cheap insurance, although a little on the pricey side.
http://www.zoops.com/zoopseal.asp
http://www.jegs.com/webapp/wcs/stores/servlet/product_10001_10002_88058_-1
http://www.zoops.com/zoopseal.asp
http://www.jegs.com/webapp/wcs/stores/servlet/product_10001_10002_88058_-1