I used to use this stuff, they sold at Truck stops... i forgot the name... they sell it online also... A friend of mine gave it to me, they used it on tractor trailers, after using this stuff, nothing else compared... I would use them on my Welds wheels that were on my mustang, they would look like brand new!
Wow, if you guys think Mother's is good, you should really try http://www.heavymetalpolish.com/ I've tried nearly every product out there, and this is by far the easiest to use and has the best reflection. Mothers is not even in the same ballpark. I would recommend the Green bottle.