What are the items for the second car maintenance?

[JuliannaAnn]

Generally, during the second car maintenance, items such as engine oil, oil filter, air filter, and cabin air filter are replaced. The second maintenance is relatively simple, but it also involves checking the condition of various fluids and the working state of wearable parts. The fluids in a car include engine oil, coolant, brake fluid, power steering fluid, and transmission fluid. The wearable parts include belts, various filters, wipers, tires, brake pads, brake discs, spark plugs, ignition coils, etc. More details are as follows: 1. During maintenance, fluids and wearable parts are replaced, and other wearable parts are inspected. 2. It is recommended to measure the water content in the brake fluid during each maintenance, as brake fluid is highly prone to absorbing water. If the water content in the brake fluid reaches 3%, it should be replaced immediately; otherwise, it can lead to reduced braking force and longer braking distances. Tires are usually replaced every four years, as they are rubber products and can deteriorate over time. If the mileage is low within four years, replacement is still necessary. Spark plugs also require regular replacement; failure to replace them in time may affect the engine's performance.