10 CAR MAINTENANCE MYTHS YOU SHOULD STOP BELIEVING
False: 4 — You can use dish soap to wash a car

It might seem like an easy money-saver, but using dish soap on your car is a bad idea. Dish soap strips away wax and protective coatings, leaving paint vulnerable to fading and damage. Over time, this can lead to more frequent waxing—or costly repainting.
Automotive shampoos are designed to clean without harming the finish. Even inexpensive car wash soap is better than dish soap when it comes to protecting your paint. Keeping your car clean with the right products helps maintain its look and resale value.