John Jones wrote:

"Penny Morgan" wrote in message
om..
We used to pour Coca Cola on rusty wheel rims and watch it eat
away the
rust. This was when I was very young, but you could give it a
try
to see if it works.

I can't vouch for this method, but there is some reasonable
chemistry behind it. Coca Cola contains phosphoric acid (like
Naval Jelly) which can reduce the rust, and carbonic acid which
can 'boil' the rust out of tight places.

Imagine what it does for your teeth. Especially since the bacteria
in your mouth can metabolize sugar into lactic acid.