
Maintenance items required at 50,000 kilometers include: changing engine oil and oil filter, four-wheel maintenance, brake inspection, chassis component check, comprehensive fluid and lighting system inspection, throttle body cleaning, fuel injector cleaning, replacing air filter, fuel filter, and cabin air filter. Changing engine oil and oil filter is a mandatory item for every maintenance service, and they should always be replaced together. The air filter should be replaced every 10,000 to 15,000 kilometers. For vehicles with timing belts, inspection or replacement is necessary at 50,000 kilometers, while timing chains don't require replacement. The maintenance also involves inspection and servicing of dozens of items across multiple systems including engine, transmission, air conditioning system, steering system, braking system, suspension, body, and tires.

Just gave my old ride a 50,000 km major service last week, sharing some insights with you all. Engine oil and filter replacement is a must, that's basic maintenance. The cabin air filter had moldy smell, so I replaced it without hesitation. Brake fluid test showed excessive water content, had to change it or braking distance would be affected. The mechanic used flashlight to check tires and found several small bulges, ended up replacing all four. The transmission fluid came out pitch black, did a 4L gravity change. Also cleaned throttle body carbon buildup, removed spark plugs to check erosion - thankfully electrode gaps were normal. Recommend checking suspension bushings - my lower control arm bushing had a crack causing squeaks over bumps, definitely not something to ignore.

At the 50,000-kilometer maintenance, I gave my car a thorough check-up. Here's what I focused on: a complete replacement of the engine oil and the three filters, especially the air filter which was so dirty you could plant flowers in it. Tire rotation and dynamic balancing were done, revealing severe uneven wear on the left front tire. The brake pads and discs have about 4mm left, but the mechanic said they must be replaced after another 5,000 kilometers. The antifreeze's freezing point was tested—barely passing, but I replaced it for peace of mind. Upon close inspection, the generator belt had fine cracks, so I replaced it in advance to avoid a breakdown. The wiper blades were completely worn out, scraping like sandpaper and definitely needed replacing. Finally, a full check of the car's lighting system was done, and the reverse light's poor contact was fixed.

For the 50,000 km maintenance, focus on driving safety. I insisted that the technician disassemble and inspect the brake caliper, and sure enough, the right rear wheel guide pin was stuck. A pressure test was performed on the cooling system, revealing poor sealing of the radiator cap. After lifting the chassis, I was shocked: the dust cover of the steering tie rod ball joint had a hole, and the ball joint was filled with sand and mud—this part had to be replaced entirely. I specifically cleaned the sunroof drain pipes, removing a lot of rotten leaves. The battery test showed only 30% life remaining, so I replaced it directly to avoid failing to start in the cold winter. Detecting these potential issues early can prevent major repairs.


