
The specific steps for car washing: Car washing should be performed when the body is cooled, in a place without wind and direct sunlight, using a towel or sponge for cleaning. The best order for washing is from the roof, hood, to both sides, while moving around the car body in a certain direction, which yields better dirt removal results. It is advisable to use a cleaning agent during car washing because the foam can prevent scratches and ensure thorough cleaning, removing oil and dirt accumulated on the car body from exhaust fumes, rain, snow, etc. Car washing agents are categorized into light-colored paint, dark-colored paint, and silver paint types, and should be selected according to the car's color. After washing, do not discard the remaining cleaning agent immediately; it can be used to clean tires, rims, and exhaust pipe outlets. After rinsing with water, the next step is to wipe the car body. Chamois leather is the best material for wiping the car, generally available at car wash boutiques, and it is usually best to prepare two pieces, one for the car body and one for the windows.

After washing cars myself for over a decade, I've developed a process: First prepare two buckets of water - one with dedicated car shampoo and the other with clean water. Use a soft brush to remove brake dust from the wheel hubs, which is the dirtiest part. Then rinse from top to bottom to wash away large particles of dirt. Next, use a wash mitt dipped in soapy water to clean the body panel by panel, making sure not to let the soap dry. Rinse the mitt in the clean water bucket after each section before continuing. Pay special attention to the roof and bumpers as they collect the most dust. When rinsing, avoid spraying the pressure washer perpendicular to the paint - angled streams are gentler. Finally, dry with microfiber towels and use compressed air for door/window crevices. Doing this monthly keeps the paint shiny for years.

In my opinion, the key to car washing lies in the details. Our shop divides the car wash into five stations: Pre-wash starts with high-pressure water mist spray to soften dirt and mud. Then, a pH-neutral car wash solution is sprayed all over the vehicle and left to soak for ten minutes to break down stains. Next, we perform a two-bucket hand wash, using deep-sea sponges, which have fine pores that are less likely to trap sand particles. After rinsing, special attention is given to chrome trims and plastic parts, using dedicated care products to prevent whitening. Finally, a tunnel-style high-pressure air dryer is used, which avoids swirl marks better than hand drying. The glass is treated separately with an alcohol-based cleaner to reduce fogging on rainy days. For washing at home, all you really need is a pressure washer and a drying towel. Avoid washing under direct sunlight, as water spots can be hard to remove.

As an office worker, I've developed a 20-minute quick wash method: using waterless car wash solution is the most convenient. Spray the car to a semi-wet state, mix one bottle cap of concentrate with 500ml water, and wipe in circular motions with a waxing sponge. If you encounter bird droppings, don't scrape hard—spray some bug and tar remover and let it sit for a minute. Use an old toothbrush dipped in soapy water to scrub the tire sidewalls, and for the rims, that iron remover spray that turns purple works great. Finally, spray the entire car with a coating agent, wipe it down for shine and dust protection. I do this after my weekly commute, saving time from queuing at car washes. The key is to buy a good quick detailer (QD) product, otherwise it may leave oil stains.

Washing a car isn't just about rinsing it clean. I learned this the hard way: once I didn't rinse the undercarriage, and later the spring seat rusted through. Now I focus on rinsing the inner wheels and undercarriage. For areas with heavy mud and sand, I pre-rinse with low-pressure water first, then use high pressure. Choose a car wash solution with good lubricity—I buy ones with palm wax ingredients. When wiping the car, avoid circular motions; wipe in straight lines in one direction. Water droplets stuck in door handles are the most troublesome, so I keep a medical ear bulb syringe to suck water out of crevices. After washing, always check the folding parts of the side mirrors, as pooled water there can corrode the motor. Remember to wash the engine bay every quarter and spray it with wiring protectant, especially for older cars.

Seeing my neighbor's new car turn into a matte finish within six months, I delved into the science of proper car washing. Temperature matters: avoid washing when the car's surface exceeds 35°C, as alternating hot and cold can cause paint cracking. Water quality is also crucial—hard water areas require purified water rinses to prevent mineral deposits. Using wrong tools is the most damaging—synthetic fiber towels act like sandpaper; only 1300gsm microfiber towels should be used. Chemical Guys’ magnetic drying towel truly works wonders. The lower 20cm of the body requires a separate towel due to concentrated road debris. Enthusiasts modifying their cars, note: color wraps need cold water rinses, while PPF demands pH-neutral cleaners. After each wash, remember to clear the windshield washer nozzles twice to prevent clogging from dirt.


