As an automotive care expert with years of experience in the industry, I am often asked about unconventional cleaning methods, and using Dawn dish soap to wash a car is one of them. Dawn dish soap is a popular brand known for its effectiveness in cleaning dishes and cutting through grease. However, when it comes to washing a car, there are several factors to consider.

Firstly, it's important to understand that car paint is a delicate surface that requires specific care.
Car wash soap is formulated to be gentle on the paint while still providing the cleaning power needed to remove dirt and grime.
Dish soap, on the other hand, is designed to tackle stubborn grease and food particles, which makes it more abrasive.

The abrasive nature of dish soap can indeed be beneficial in certain cleaning scenarios, but when applied to car paint, it can lead to a few issues.
Abrasive soaps can accelerate the oxidation process on the car's surface, which over time can lead to a dull and faded appearance. This is because the abrasive particles in the soap can cause micro-scratches on the paint, which can trap dirt and make the car look older than it is.

Additionally, dish soap is not pH balanced for automotive use.
Car wash soap is specifically formulated to maintain the correct pH balance to protect the paint and prevent damage. Using a soap that is not balanced can strip away the protective layers on the car's surface, making it more susceptible to environmental damage.

Another concern is the effect of dish soap on a car's wax coat. Many car owners apply a protective wax to their vehicles to give them a glossy finish and protect the paint from UV rays and other elements. Dish soap can break down this wax, reducing its effectiveness and potentially requiring more frequent applications.

Furthermore, cars have various materials, including rubber and plastic parts, which can be sensitive to certain chemicals. Dish soap, being more aggressive in its cleaning properties, can potentially damage these materials, leading to discoloration or degradation over time.

In conclusion, while Dawn dish soap is excellent for its intended purpose—cleaning dishes—it is not recommended for washing cars. The abrasive nature, incorrect pH balance, and potential damage to the wax coat and other materials make it a less than ideal choice for automotive cleaning. It's always best to use products that are specifically designed for the task at hand to ensure the longevity and appearance of your vehicle.

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While it does a good job at that, it's good because it's considered an abrasive soap. But, when you use an abrasive soap on something like car paint, it accelerates the oxidation process and gives the car a dull look. Dish soap will also break down a car's wax coat and can be tough on rubber.Nov 26, 2014read more >>