Alright so i heard this alot ...i dont know about here but i know alot of people ask me how to re-polish their exhuast tip and makeit look brand new with removing all the grease and soot or w/e ... alot of peopel said its impossible ... well i work at dodge.. and i was bored so i was expermenting with chemical cleaners we have..so i have 50,000+ miles on my rx8...and i did take of all the soot and grease..therefore it is possible ..well i was just posting the cleaner is called wheel acid..im not sure if its available 2 the public but yea..im bored and just felt like sharing...oh yea wheel acid works great with any metal and makes it look new..therefore my black exhuast tips look brand new and chrome unfortunaly no pics..anyway ... excuse my spelling for i am 2 lzy and can careless about themm... for more info i guess just message me for the wheel acid

Nevr-Dull works good also. And it's widely available and inexpensive.:)

Just get this and be done with it!

http://www.englishcustompolishing.com/usca/hotchrome.html

hah that acid for cleaning at dealerships will clean anything... and take then skin off your hand if you get your hands on that stuff dont breath it in either ive used it before. But it works ver well. NVR Dull is a bit safer to use just requires a little elbow grease. :)