While commenting on this story, I got the idea to have my daughter do her Science Fair experiment on the cleaning powers of Coke and Pepsi. We used tap water, club soda, Pepsi and Coke to soak dirty, rusty parts and the goal was to see which worked the fastest:
Pepsi was the clear winner with an unexpected strong showing by club soda. My daughter and I had a lot of fun doing this experiment together. It isn't a perfect experiment because we did not dirty the parts the same way over the same time period, but I was impressed with the cleaning abilities of beverages. That stuff is sloshing around in my gut most of the time!