
Car second maintenance requires the following parts to be replaced: 1. Engine oil and oil filter. 2. Air filter. 3. Fuel filter. 4. Transmission oil. 5. Air conditioning filter. Car maintenance refers to the preventive work of regularly inspecting, cleaning, supplying, lubricating, adjusting or replacing certain parts of the car, also known as car servicing. The second maintenance of a car refers to the secondary maintenance or second-level maintenance, and its inspection items include: 1. Spark plugs. 2. Brake fluid. 3. Throttle body. 4. Fuel injectors. 5. Tires and braking system. 6. Engine belt. 7. Performance of lighting, warning lights, turn signals and car horn.

I just went through the second car maintenance and found several essential items that must be replaced. First, the engine oil and oil filter need to be changed—it's like giving the car a 'blood transfusion,' crucial for lubricating the engine and boosting performance. During the second maintenance, I usually drive around 10,000 kilometers; if the oil deteriorates, the engine will suffer excessive wear. The air filter should also be checked—if clogged with dust, it may need replacement. The cabin air filter might also need changing, especially if you drive a lot in summer, to ensure air quality. It's also advisable to have the mechanic check the brake fluid and coolant levels, topping them up if low. During my last second maintenance, I noticed unstable tire pressure, which was adjusted to save money and improve safety. Remember, the second maintenance is the core of regular upkeep—don’t cut corners. It can extend your car’s lifespan by a decade and save you from costly major repairs.

As a new car owner, the second maintenance taught me a lot. The key is changing the engine oil and oil filter, which is like a basic 'maintenance package' that prevents engine stalling. The dealer might say replacing the cabin air filter and air filter is a must, but in reality, it depends on the situation; if the driving environment has little dust, you can check and decide next time. The second maintenance also includes free checks for brake pad thickness and the lighting system. If the brake pads are too thin and not replaced in time, it could affect braking safety. I often advise friends to check the tightness of chassis screws during the second maintenance—these small details are easily overlooked but can prevent major accidents. Regular second maintenance helps develop good habits, ensuring the car runs smoothly and saves money.

From a cost-saving perspective, don't be fooled into replacing unnecessary parts during the second maintenance. The only mandatory replacements are engine oil and the oil filter, with the core purpose being to maintain smooth lubrication. If the air filter and cabin air filter aren't dirty enough to affect functionality, you can safely skip them to save money; I personally remove and clean them periodically to prevent clogging. Inspection items like tires, brakes, and electrical systems are mostly free—just have the mechanic take a quick look, and continue using them if there are no major issues. I usually bring my own spare parts to a small shop for replacement, cutting the cost in half. The key to second maintenance is basic upkeep—you can ensure safety without wasting money, just don't delay it.


