How Should Used Cars Be Maintained?
3 Answers
Maintenance methods for used cars: 1. Oil change: For a newly purchased used car, the oil in many parts may be impure or ineffective, so it should be diagnosed and replaced promptly; 2. Tire inspection: Tires are the "feet" of a car, so pay attention to the tread patterns and cleanliness to ensure grip. Tires can harden or develop other defects due to prolonged disuse, so problematic tires should be repaired or replaced; 3. Air conditioning cleaning: The air conditioning system acts as the "lungs" of a car, constantly interacting with air. Impurities, dust, bacteria, and viruses in the air can enter the system, combining with condensation and clogging components like the evaporator. Regardless of the age or mileage of the used car, the air conditioning should be cleaned after purchase.
I just bought a used car and need to start maintenance from scratch, as the previous owner's upkeep habits were different, so I'm particularly focused on a thorough inspection. The first thing I did was obtain the vehicle history report, using free tools to check for any accidents or odometer fraud, ensuring I got my money's worth. Then, I took it to a professional shop for a comprehensive check: the engine oil must be freshly changed to prevent engine aging; tire wear and pressure adjustments for safe driving; the braking system was inspected for brake pad thickness, replacing them if severely worn; coolant and brake fluid were also tested to avoid leakage issues. Externally, I regularly wash and wax the car to protect the paint from rust; interior cleaning is even more important, as used seats can harbor odors, so I use a vacuum and disinfectant spray. For the electrical system, I tested all lights to ensure they're bright, as minor issues can lead to costly repairs. I keep a log of every maintenance task in a notebook—developing this habit can extend the car's lifespan, making a used car drive as reliably as a new one.
I love hands-on work, so I handle the maintenance myself right after getting a used car. I flip open the owner's manual to check the maintenance schedule and proceed step by step: pop the hood, inspect the engine oil—if it's dark, I change it immediately, along with replacing the air filter to keep dust out of the intake. For brake fluid, I use a test pen to check moisture content; if it's too high, I replace it to avoid brake failure. Tires are a priority—I measure tread depth with calipers and replace them if it's below 3mm, checking tire pressure weekly with a portable air pump for convenience. I also inspect the suspension and steering system for any unusual noises, tightening any loose screws. On the electrical side, I ensure the battery voltage is stable and terminals aren't corroded. For the interior, I do the cleaning myself, using steam for sanitization. Regular waxing keeps the body shiny and saves on car washes. My garage is stocked with all the tools—DIY is fun, saves money, and builds skills. A well-maintained used car can perform just as well as a new one.
