you can try a house hold product called magic erase it worked on my moms car
Have the coating removed - It is about $20. If you take them to where you bought them, they may do it for free.
There is no "white stuff" in a silencer/muffler, unless you mean fiberglass packing. It has no use when removed.
a quick fix on any white non painted plastic is soft scrubb. I use is on my ATV plastic to remove scraches and stains. Work and is quick
it hurts
I heard that you put toothpaste on it.
You can buy a gentle abrasive from a shop which is used to remove scratches from watches and glass. Alternatively, you could use a car polish, or a toothpaste, and a lint free cloth.
There is a device that removes scratches. Go to Lowes or Home Depot. Signed by Tannermo
Yes, but there should be no scraches
The long mane prevents scraches from fighting.
well the dc can be coverd in scraches'
Buy a disc cleaner set they sell them in walmart.
If they aren't severe, try Meguiar's Plastic Glaze.