Rust stains can occur on a stainless steel sink or appliance when a wet ... Make a paste with 1/4 cup of cream of tartar and 1 cup of distilled white vinegar. Cover the rusty area with the paste ...

In fact, iron and steel (an alloy consisting of iron and carbon) will completely reduce to iron oxide and other constituent elements over a long enough period of time. So, how to stop rust on a car?