Essential maintenance items at 25,000 kilometers?

[SanChristian]

The maintenance items required at 25,000 kilometers include changing the engine oil, engine oil filter, air filter, cabin air filter, fuel filter, checking the coolant, inspecting the chassis, and gear oil. The key points for engine maintenance are as follows: 1. Use the appropriate grade of engine oil and change it regularly (every 5,000 kilometers) along with the filter. 2. Regularly maintain the air cleaner and replace it periodically (every 20,000 kilometers). 3. Clean the fuel system regularly and replace the fuel filter periodically (every 30,000 kilometers). 4. Maintain the radiator cooling network regularly (every 30,000 kilometers). 5. Replace the spark plugs periodically (every 40,000 kilometers or based on driving conditions).