First among them is the idea that plain, ordinary dishwashing detergent is just fine and dandy for car wash purposes.
Even in the face of other opinion that suggests "go ahead, not a problem" when it comes to squeezing a little into a bucket of hot water and tackling the SUV or four-door sedan, Meguiar nixes the idea altogether.
"Any dishwashing detergent is meant to remove everything from the surface," he says. "That will include stripping the polymers of the paint surface and the last thing you want the paint finish to be is squeaky clean."
Meguiar likens the effect of dishwashing detergent to what it does to someone's hands. "Too much detergent will dry the skin. On the surface of a car, the same thing occurs; dishwashing detergent actually accelerates the oxidation process when you use it on a regular basis."
Even in the face of other opinion that suggests "go ahead, not a problem" when it comes to squeezing a little into a bucket of hot water and tackling the SUV or four-door sedan, Meguiar nixes the idea altogether.
"Any dishwashing detergent is meant to remove everything from the surface," he says. "That will include stripping the polymers of the paint surface and the last thing you want the paint finish to be is squeaky clean."
Meguiar likens the effect of dishwashing detergent to what it does to someone's hands. "Too much detergent will dry the skin. On the surface of a car, the same thing occurs; dishwashing detergent actually accelerates the oxidation process when you use it on a regular basis."
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