What is the impact of high-temperature car washing on paint surfaces?
2 Answers
High-temperature car washing has the greatest impact on paint surfaces by causing the paint to age and lose its gloss. Below is an extended explanation: Avoid washing the car under the scorching sun: Many car owners prefer washing their cars under the sun because it allows the water marks to dry quickly. However, this is a misconception as it can damage the car's paint. Washing the car under intense sunlight creates a magnifying glass effect with water droplets, leading to localized high temperatures on the top layer of the paint. Over time, this causes the paint to lose its gloss. Do not wash too frequently: Under normal circumstances, washing the car once a week is ideal. Many car owners are very particular about cleanliness and cannot stand even a speck of dirt on their cars, so they wash them every one to two days. However, this is completely unnecessary as washing the car too frequently can also reduce the lifespan of the paint. If the car is washed every 1-2 days, the paint's lifespan may be reduced by up to 50%.
Washing your car with hot water is really bad for the paint. I've experienced it myself—after washing my car with hot water in the summer, the paint surface started developing fine cracks and turned dull. This happens because hot water accelerates the oxidation process of the paint, making the clear coat brittle and prone to peeling. Additionally, dirt dissolved in hot water can more easily penetrate the paint, leading to permanent water stains and fading. If you do this often, your car will look years older. It's better to wash your car in the cool morning or evening using room-temperature water, as this helps preserve the paint's shine and extends its lifespan. Also, dry the car promptly after washing to prevent water spots from evaporating in the heat. From my experience, protecting the paint not only keeps your car looking good but also maintains its overall value.
