What Should Be Replaced in a Newly Purchased Used Car?
2 Answers
Newly purchased used cars require the following replacements: Oil Change: The first thing to do after purchase is to change the oil. Many used cars may have low mileage since their last maintenance, but if the car has been sitting with the dealer for a long time, it's advisable to change the oil as soon as possible. For naturally aspirated engines, semi-synthetic oil is recommended. Coolant Replacement: Coolant should theoretically be replaced every 2 years or 40,000 kilometers. Since the history of the coolant in a newly purchased used car is unknown, it's best to replace it immediately. For the first replacement, consider doing it at a 4S shop, as the price difference between a 4S shop and other service providers is minimal for coolant replacement.
I just bought a used car, and the first thing I did was change the engine oil and oil filter, because you never know when the previous owner last serviced it. I think this is particularly important—not changing them could lead to faster engine wear or increased fuel consumption. Next, I replaced the air filter, which protects the engine's intake system. In dusty areas, it can get clogged easily. The tires also need to be checked for tread depth and wear. Safety comes first, so if they're worn out, I replace them to prevent skidding. Brake pads and brake fluid shouldn’t be overlooked either. I bought tools to measure the thickness and top up or replace the fluid if it’s low. The cabin air filter was swapped for a new one, especially important in summer for fresh airflow. I checked the spark plugs—older cars often need replacements. The battery terminals were cleaned to prevent corrosion and starting issues. If the mileage is high, the transmission fluid should be changed, especially for automatic transmissions. Finally, I topped up the windshield washer fluid and coolant for peace of mind while driving.
