Coca-Cola can be used to clean household appliances and cars.
It’s too bad this rumor isn’t true, because it would be very convenient to have a single, low-cost substance that can clean toilets, car batteries and windshields, while also loosening bolts and removing rust, and then allow you to wash the grease from your hands when you finish. Sadly, no such product exists, and the Coca-Cola site suggests that should you wish to use a common household item to clean your refrigerator, then stick to vinegar.
SOURCE: Products And Packaging Myths & Rumors | thecoca-colacompany.com