What are the maintenance items for 50,000 kilometers?
3 Answers
The maintenance items for 50,000 kilometers are: engine oil and oil filter, four-wheel maintenance, brake inspection, chassis components, and full vehicle fluid and lighting inspection. If a major maintenance has not been performed, additional items such as throttle body cleaning, fuel injector cleaning, air filter replacement, fuel filter replacement, and cabin air filter replacement should be included. Replacing the engine oil and oil filter is a mandatory item for every maintenance service. Due to the harsh high-temperature and high-pressure environment inside the engine, the shelf life of engine oil is significantly shortened, and its performance degrades substantially, failing to provide adequate protection for the engine. The oil filter prevents impurities from mixing into the oil, which can cause oxidation, leading to sludge and clogging the oil passages. Both the engine oil and oil filter should be replaced simultaneously. If the vehicle's engine uses a timing belt, it should be inspected or replaced at 50,000 kilometers. If the engine uses a timing chain, replacement is not necessary.
I just completed the 50,000 km maintenance for my car. Remember to bring this checklist to the 4S店: Oil and oil filter replacement is a must as the foundation. The air filter in the engine bay must be clogged with dust by now. Check the cabin air filter for any musty smell—replace it if detected. The 4S店 mechanic used a borescope and found severe carbon buildup in my engine, so we performed walnut shell blasting. The brake fluid tested with a moisture meter showed excessive water content, requiring immediate replacement to prevent potential emergency brake failure. After rotating the tires, we did a wheel alignment to avoid uneven wear that could hurt your wallet. Finally, had the mechanic inspect the suspension bushings and ball joints with a flashlight—rubber components at this mileage usually start aging and cracking. The full inspection also revealed insufficient coolant boiling point, so it’s recommended to replace it along with the antifreeze.
Last time I accompanied my colleague for the maintenance of his 50,000-kilometer Corolla, the service list highlighted these key points: The standard oil and oil filter package was essential. The air filter was full of catkins and small insects when removed. The brake pads had 5mm thickness left, and the mechanic said they could last another 8,000 kilometers for city driving. The transmission oil was tested with a dipstick and found to be severely oxidized, so 12 liters were replaced via a flush. The tires showed significant inner wear, so a wheel alignment was done on the spot. The spark plugs had excessive electrode gaps when removed and were replaced with new iridium ones. The battery life was tested and showed 43% remaining, which might cause starting issues in winter. Finally, the power steering fluid was found to be black and cloudy—not replacing it would make the steering wheel heavier. It's recommended to focus on checking these wear parts and fluid conditions.
