QUOTE (8valve @ Jan 25 2006, 11:50 AM)
<{POST_SNAPBACK}>Gunk do a great driveway cleaner, works very well.
Pour it on, agitate with a brush, and hose away.
That stuff is the business, I also found that a wire brush was a great help, but that was when removing oil stains from a concrete drive, would be cautious about using it on cobbles