One of the worst things to contend with when you are washing your car, especially on hot Summer days is water spots. No matter how hard you try it is sometimes almost impossible to stop water spots from appearing as your car dries. If this is a problem you are suffering from every time you wash your car then you will be pleased to know that the cause has been identified. You are using the wrong sort of water! Now before you go off and say that you are fighting a lost cause because there is no way to change your water, there is a solution. You need to change to de-ionised water for the final rinse of your car. What is De-ionisation? Ions are simply impurities that exist in any normal water supply and come in the form of dissolved minerals such as calcium and sodium, When the water evaporates the minerals that were once dissolved in the water are left behind to leave unsightly spots on your paintwork. The normal course of action is to dry your car with a soft cloth or paper towel so that the water doesn't have time to evaporate and leave behind the spots. This is sometimes impractical though, especially on a hot day when the sun will dry parts of your car before you get a chance to g...