What Needs to Be Replaced in Car Maintenance?
4 Answers
Car maintenance requires replacement of: engine oil, fuel, transmission fluid, brake fluid, power steering fluid, engine antifreeze coolant, windshield washer fluid, battery water, engine oil filter, air filter, fuel filter, cabin air filter, spark plugs, brake pads, brake rotors, clutch, wiper blades, seals, timing belt, tires, and battery. All vehicle fluids and wearable parts such as tires, engine oil, spark plugs, and batteries are continuously being developed and updated. It is recommended to use fluids and wearable parts that meet automotive standards and to adhere to the car's user manual for regular maintenance.
I've been driving for over a decade and have encountered many pitfalls in car maintenance. The most crucial aspects are engine oil and oil filters, which need to be changed every 5,000 to 10,000 kilometers, depending on the oil grade. The air filter should be cleaned of dust during each maintenance session and replaced entirely every 20,000 kilometers; otherwise, the engine will struggle to intake air. I usually replace the cabin air filter twice a year since respiratory health is important. Brake fluid should be tested for water content every two years and replaced if it exceeds 3%. Spark plugs with nickel alloy need replacement every 40,000 to 50,000 kilometers, while iridium ones can last up to 80,000 kilometers. Don't hesitate to replace tires when the wear indicators are nearly reached—skidding in the rain is terrifying. Also, don’t just rely on the color of the coolant; replace it immediately if the freezing point is insufficient, or you risk cracking the radiator in winter, which would be a huge loss.
Working in repair shops for years, maintenance items actually follow patterns. Keep an eye on fluids: engine oil ensures lubrication, brake fluid affects stopping distance, and power steering fluid lightens the steering wheel. For consumables: replace brake pads immediately when they're down to 3mm, address belts with over three cracks due to aging, and discard wiper blades that don't clean properly. Don't skimp on filters: replace the fuel filter every 40,000 km; impurities in the fuel tank can directly clog injectors. Test battery health after three full years—flashing dashboard lights during startup signal danger. Recommend checking windshield washer fluid and tire pressure quarterly; these can all be DIY tasks.
For those who prioritize safety, these components should be maintained first: The braking system is the bottom line; brake discs must be replaced if their thickness is less than 60% of the specified value. If the suspension system makes abnormal noises when going over speed bumps, the shock absorbers may be leaking oil. The lighting system includes fog lights and reverse lights; replace any burnt-out bulbs promptly. If the steering wheel has excessive play, a four-wheel alignment is necessary, as severe tire wear won't be resolved by just replacing the tires. For the electrical system, focus on the alternator and starter, especially if the battery frequently loses charge. It's safer to replace all vehicle fluids when they are due; for example, changing the transmission oil at 60,000 kilometers can protect the gear set. Those who drive frequently at night should regularly clean the headlight covers, as yellowing can reduce brightness by half.
