After years of testing, Borla has finally developed an exhaust cleaner/polish that is specifically designed to work on stainless steel exhaust components for cars, motorcycles, boats, trucks etc. Exhaust systems deal with specific elements like heat cycling, condensation, oxidation etc. that create unwanted affects to the material which are specific to exhaust. Borla's polish is designed ONLY to counteract these affects and as a result performs better for this purpose than anything else available.