Modern cars do not need to be filled with water. Windshield washer fluid is added near the front of the car, while antifreeze is added near the windshield. Neither windshield washer fluid nor antifreeze can be replaced with water. The methods for car maintenance are as follows: 1. Warm up before starting: For fuel-injected cars, turn the key to the second position and wait 5-10 seconds before starting. This is because the fuel pump begins working when the ignition is turned on, adjusting fuel pressure and injection volume. Starting after a few seconds is beneficial for the car's starter and engine. After starting, most people are accustomed to letting the engine idle until the coolant reaches normal temperature before driving away. However, this warm-up method is incorrect because, unlike carburetor engines, fuel-injected engines cannot operate the fuel supply system properly until they reach working temperature. Forced driving may result in unstable RPMs or stalling. Therefore, idling to warm up a carburetor engine is a last resort. 2. Avoid high-speed driving: New cars have speed limits during the initial break-in period. Domestic cars are generally limited to 40-70 km/h, while imported cars are usually limited to within the first 1,000 km, with full-throttle speed not exceeding 80% of the maximum speed. It is also important to monitor the engine tachometer and speedometer to ensure the engine and vehicle operate at moderate speeds. 3. Avoid overloading: Overloading a new car can damage its components. Therefore, within the first 1,000 km, domestic cars should not exceed 75%-80% of the rated load, while imported cars should not exceed 90%. Additionally, choose smoother road surfaces to minimize excessive vibration, impact, or sudden braking, reducing stress on the body and powertrain.
