What Detergent Should Be Used When Washing a Car?

[VonArabella]

Main car washing detergents include laundry detergent, dishwashing liquid, car wash soap, water wax, and scratch-free car wash products. The main classifications and steps for car washing are as follows: Main Classifications: Dishwashing liquid car wash; Laundry detergent car wash; Car wash soap, etc. Car Washing Steps: Dilute the car wash soap; Clean the car body surface, lift the wipers, first use a hose to draw water from the faucet and rinse the car body.; Clean the gaps; Dry the car body; Wipe the interior of the car, rinse the cloth with clean water, and wipe the central console, dashboard, steering wheel, gear shift, etc. in sequence. After wiping the central console and inner door handles, take out the floor mats for cleaning, and apply wax to the dashboard.

[McVera]

Over the years of washing my car myself, I've picked up some tricks. Special pH-neutral car wash soap is definitely the most reliable choice. Brands like Turtle Wax and Meguiar's available in supermarkets are quite good—they don't corrode the paint and even protect rubber seals. Never use household dish detergent though, as its high alkalinity will strip off the car wax. A friend who works at a car wash told me it's best to use a car shampoo that contains some wax components, which leaves a protective film after washing—you can see perfectly rounded water beads under sunlight. For long trips where the car gets covered with bug splatter or bird droppings, use a bug and tar remover for spot treatment first (remember to wear gloves). Every time I wash my car, I always rinse off loose dirt with a pressure washer first to avoid scratching the paint during scrubbing.

[DeKeegan]

I've worked in a car wash for ten years and seen too many cases of damaged paint due to incorrect detergent usage. The safest option is a pH-neutral dedicated car wash solution. The dilution ratio depends on the product instructions, typically 20ml mixed with 5 liters of water is sufficient. Adjust your approach based on the paint condition: use a gentle formula for new cars or wrapped vehicles, while older cars with dark paint can benefit from glaze-containing products to enhance shine. For rims, use an acidic cleaner, but avoid alkaline solutions on tire sidewalls. During the rainy season, adding a water beading agent can improve visibility while driving in the rain. Don't skimp on tools either – investing in a long-pile wash mitt is better for paint protection than using a sponge.

[VonMia]

There's a lot to learn about car wash soap! A pH-neutral formula is a basic requirement, as strong alkaline detergents can damage the paint. I often use a car wash shampoo with palm wax, which leaves the paint looking particularly shiny. Be careful when cleaning the wheels—only use dedicated wheel cleaners, as regular car wash soap won't remove brake dust. In summer, when the car is parked under trees, tree sap can be a problem, so it's good to have a bottle of bug and tar remover on hand. Mixing ratios need to be precise—using too much concentrate can leave water spots. After washing, remember to dry the car immediately to avoid water marks from air drying. Also, don't wash the car too frequently; once every two weeks is ideal.

[LeChase]

After trying various car wash solutions, I found that concentrated pH-neutral car shampoo is the most hassle-free. Diluted with water in the right ratio, one bottle can last for dozens of washes, which is more cost-effective than buying pre-mixed solutions. For new cars, opt for shampoo with ceramic coating to maintain paint gloss; for older vehicles, choose formulas containing mild abrasives to remove oxidation layers. Once I accidentally used kitchen cleaner and scratched the chrome trim on the rear – the repair cost me 700 yuan. My current washing routine has three steps: first rinse off loose dirt, then apply thick foam using a foam cannon with shampoo, and finally rinse with high-pressure water. The key is to avoid washing under direct sunlight, as rapid water evaporation causes water spots.

[AliyahLee]

As a long-time member of the car club, we often exchange car washing tips. pH-neutral car shampoo is the baseline—anything with a pH above 7.5 can damage the wax. I prefer formulas containing carnauba wax, which maintain shine for about two weeks after washing. Divide the car into zones for cleaning: use regular detergent for the body, iron remover for the wheels, and specialized protectant for plastic parts. Prepare two buckets—one with clean water and the other with shampoo solution—to avoid introducing dirt into the cleaning mixture. In winter, pay special attention to water temperature, as cold water hitting hot paint can cause cracking.