汽车保养时，需要检查以下几种关键液体，以确保汽车的正常运行和延长使用寿命：

　　When maintaining a car, it is necessary to check the following key fluids to ensure the normal operation of the car and extend its service life:

　　一、机油

　　1、 Engine oil

　　作用：机油是发动机的“血液”，主要作用是润滑发动机的运动部件，防止摩擦和过热，同时还具有清洁、冷却、防锈和密封等功能。

　　Function: Engine oil is the "blood" of the engine, mainly used to lubricate the moving parts of the engine, prevent friction and overheating, and also has functions such as cleaning, cooling, rust prevention, and sealing.

　　检查方法：使用机油尺检查机油的油位，确保其在建议的范围内。同时，检查机油的颜色和稠度，如果机油变得发黑、粘稠或有异味，说明需要更换。

　　Inspection method: Use an oil dipstick to check the oil level and ensure it is within the recommended range. At the same time, check the color and consistency of the engine oil. If the oil becomes black, viscous, or has an odor, it indicates that it needs to be replaced.

　　二、冷却液/防冻液

　　2、 Coolant/Antifreeze

　　作用：冷却液也称为防冻液，主要作用是调节发动机温度，防止发动机过热或过冷，从而保护发动机的正常运行。

　　Function: Coolant, also known as antifreeze, is mainly used to regulate the engine temperature, prevent the engine from overheating or overcooling, and thus protect the normal operation of the engine.

　　检查方法：检查溢流水箱中的冷却液液位，确保其位于最小和最大标记之间。如果冷却液液位持续较低，可能存在泄漏问题，需要及时检查并补充。

　　Inspection method: Check the coolant level in the overflow tank to ensure it is between the minimum and maximum markings. If the coolant level remains low, there may be a leakage problem that needs to be checked and replenished in a timely manner.

　　三、变速箱油

　　3、 Transmission fluid

　　作用：变速箱油主要作用是润滑变速箱的齿轮和轴承，减少摩擦和磨损，同时帮助变速箱散热和清洗杂质。

　　Function: The main function of gearbox oil is to lubricate the gears and bearings of the gearbox, reduce friction and wear, and help dissipate heat and clean impurities from the gearbox.

　　检查方法：检查变速箱油位，确保其处于正确的水平。同时，观察变速箱油的颜色和质地，如果呈黑色、有烧焦味或含有颗粒，可能需要更换。

　　Inspection method: Check the transmission oil level to ensure it is at the correct level. Meanwhile, observe the color and texture of the transmission oil. If it appears black, has a burnt smell, or contains particles, it may need to be replaced.

　　四、制动液

　　4、 Brake fluid

　　作用：制动液是刹车系统的重要组成部分，它能够将力从制动踏板传递到制动系统，使车辆能够平稳、安全地停车。

　　Function: Brake fluid is an important component of the braking system, which can transmit force from the brake pedal to the braking system, enabling the vehicle to stop smoothly and safely.

　　检查方法：检查主缸储液罐中的制动液液位，确保其在推荐范围内。同时，观察制动液的颜色，如果颜色变暗或受到污染，可能需要更换。

　　Inspection method: Check the brake fluid level in the master cylinder reservoir to ensure it is within the recommended range. Meanwhile, observe the color of the brake fluid. If the color becomes darker or contaminated, it may need to be replaced.

　　五、动力转向液

　　5、 Power steering fluid

　　作用：动力转向液主要作用是帮助转向系统更轻松、更平稳地工作，提高驾驶的舒适性和安全性。

　　Function: The main function of power steering fluid is to help the steering system work more easily and smoothly, improving driving comfort and safety.

　　检查方法：找到动力转向液储罐，并按照车辆说明检查液位。如有必要，请加满并确保液体清洁且无碎屑。

　　Inspection method: Find the power steering fluid storage tank and check the fluid level according to the vehicle instructions. If necessary, please fill up and ensure that the liquid is clean and free of debris.

　　六、玻璃水

　　6、 Glass water

　　作用：玻璃水主要用于清洁汽车车窗和雨刮器，确保驾驶时的视野清晰。

　　Function: Glass water is mainly used to clean car windows and wipers, ensuring clear visibility while driving.

　　检查方法：检查玻璃水储液罐的液位，确保其充满合适的清洗液溶液。特别是在天气恶劣的季节，需要确保玻璃水的充足。

　　Inspection method: Check the liquid level of the glass water storage tank to ensure that it is filled with a suitable cleaning solution. Especially in harsh weather seasons, it is necessary to ensure sufficient glass water.

　　综上所述，汽车保养时需要检查机油、冷却液/防冻液、变速箱油、制动液、动力转向液以及玻璃水等关键液体。这些液体的正常与否直接关系到汽车的性能和寿命，因此务必定期检查并及时补充或更换。

　　In summary, during car maintenance, it is necessary to check key fluids such as engine oil, coolant/antifreeze, transmission oil, brake fluid, power steering fluid, and windshield washer fluid. The normality of these liquids is directly related to the performance and lifespan of the car, so it is essential to regularly check and promptly replenish or replace them.

　　本文由 济南宝马汽车保养 友情奉献.更多有关的知识请点击  http://www.lutongqixiu.com   真诚的态度.为您提供为全面的服务.更多有关的知识我们将会陆续向大家奉献.敬请期待.

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