BoatBanter.com - View Single Post

wrote:
Used to moor near a refinery, and had all kinds of opportunities to get
my fenders clean.

QuickStrip works, but is pricey
Acetone works (by eating away your fender)
Comet, a stiff brush, and elbow grease are what I usually use.

good luck!

I've had very good results by using Spray Nine. It has something in it
that just seems to work. No affiliation with the company - I'm just a
happy customer.
Doug