This has been discussed before. It's something us V6 owners have to deal with.... it's very common.
The Brasso sounds like a great idea - good shine on that muffler!JaDa.Poland said:I use Braso and fine steel wool. Does a great job and keeps the mulfer looking new. See attached picture. The Touareg has 11000 miles and 10 months old. The advantage of Braso is the shine.
Touareg owner living in Germany......