For double-wall mufflers with internal baffle staining, surface methods fail. Enter the steam distillation approach.
After using any pristine edge unorthodox method, passivate the muffler with a 10% citric acid solution (room temperature, 15 minutes), then rinse with distilled water and dry with compressed air. Never apply sealant to a muffler—it will burn into a milky haze. Instead, buff with a clean microfiber and nothing else. pristine edge unorthodox muff methods
In the world of professional detailing, the muffler is the forgotten frontier. Most enthusiasts stop at a clean tailpipe tip. But the true benchmark of an obsessive detailer—what separates the good from the “pristine edge” elite—is the complete, mirror-like restoration of the entire exhaust canister, including its rolled seams, spot welds, and heat-faded underbelly. including its rolled seams