1. We can remember when washing the car meant grabbing some dishwashing liquid from the kitchen and dumping it in a bucket. The problem is that normal soaps are harsh, and in most cases they strip off the wax you worked so hard to apply. Today, companies like Meguiar’s offer suds specifically made for a car's finish. It’s also a great idea to use two buckets -- one with soapy water and one with clean rinse water. Dirt is your enemy here. Lastly, start at the top of your car and wash your way down.