Automotive maintenance items are mainly divided into three categories: daily maintenance, regular maintenance, and maintenance under special circumstances. Daily maintenance includes the "three inspections" before driving, during driving, and after parking, as well as the "four cleanings" to keep the oil, air, fuel filters, and battery clean, while also checking for the "four leaks" (water leakage, oil leakage, electrical leakage, and air leakage). Primary maintenance (7,500-15,000 km or 6 months) focuses on lubrication and fastening, requiring an engine oil and oil filter change, along with checks on fluid conditions such as coolant and brake fluid. Secondary maintenance (15,000 km or 12 months) emphasizes inspection and adjustment, including replacing the air filter element, checking brake pad thickness, and verifying the tension of the timing belt and other critical components. Routine maintenance also involves periodic replacement of components such as spark plugs (nickel alloy: 20,000-30,000 km / iridium: 100,000 km), brake fluid (every 2 years or 40,000 km), transmission fluid (manual: 60,000-80,000 km / automatic: 40,000-60,000 km), and tyres (replacement after 5 years or 80,000 km). Vehicle owners should strictly adhere to the maintenance schedule outlined in the owner's manual and adjust appropriately based on actual driving conditions. For instance, in dusty environments, the air filter replacement interval should be reduced, while frequent short-distance driving may warrant fluid changes 20% earlier to ensure optimal vehicle performance and safety.
