What are the seasonal maintenance items?

[McChristopher]

Seasonal maintenance items include replacing antifreeze, inspecting and cleaning the fuel system, changing lubricating oil, etc. Replacing antifreeze: Fill the engine with the type of antifreeze specified by the manufacturer. Before adding antifreeze, the engine cooling system should be cleaned. Using long-life antifreeze year-round ensures good engine cooling. Inspecting and cleaning the fuel system: Before winter, the fuel system should be thoroughly cleaned, as troubleshooting fuel system issues in cold winter is more challenging. During seasonal maintenance, all filters should be completely cleaned, fuel filters should be cleaned or replaced, water should be drained from the fuel-water separator and cleaned to eliminate potential faults. Changing lubricating oil: If the vehicle uses single-grade oil, it must be replaced with lubricating oil suitable for the seasonal temperature during maintenance. If multi-grade oil suitable for both winter and summer is used, simply change the lubricating oil according to the oil change interval mileage.