Man washing his car with proper technique

Five do’s and don’ts of car washing

Washing a car isn’t too complicated, but there are definitely a few best practices to take into consideration. Some traditional ways of cleaning cars – perhaps even what mom and dad taught you (No, it’s not ok to use dish soap! Ever!) – can actually damage your car’s exterior. Follow this list to clean your car and help boost its value:
  1. Don’t wait until your car is visibly dirty.
    Bugs, bird droppings, acid rain and pollutants can dull your car’s finish and, in extreme cases, strip the paint. Don’t think of the weekly car wash advice as all or nothing. Monthly washes are likely sufficient to maintain your car’s appearance. The exception is in areas where there is acid rain. Always rinse your car after acid rain or the paint could be permanently scarred.
  2. Don’t wash a hot car.
    High temperatures can make cleaning more difficult and cause deposits that eventually damage paint. Park your car in the shade or wait until the heat of the day passes before getting started.
https://mobiloil.com/en/article/car-maintenance/basic-car-maintenance-tips/how-to-wash-a-car