不同年份不同车型可能使用多款自动变速箱，同品牌不同型号的变速箱油能混用吗？其次，尽管整车品牌众多，但生产自动变速箱的企业倒不多，用量比较大的也就采埃孚、爱信、通用、奔驰等几家厂商。那么不同厂家的自动变速箱能使用相同的变速箱油吗？或者同一厂家的自动变速器使用同一种变速箱油吗？

　　Multiple automatic transmissions may be used in different years and models. Can different types of transmission fluids from the same brand be mixed? Secondly, although there are many vehicle brands, there are not many companies that produce automatic transmissions, and only a few manufacturers such as ZF, Aisin, General Motors, and Mercedes Benz use them in large quantities. Can automatic transmissions from different manufacturers use the same transmission fluid? Or do automatic transmissions from the same manufacturer use the same type of transmission fluid?

　　相应的另一些油品生产企业，推出许多种的“替代油品”、“升级油品”或“通用油品”。这些油品真的能适用于各种不同的变速箱吗？

　　Correspondingly, other oil production enterprises have launched many types of "alternative oil products", "upgraded oil products" or "universal oil products". Can these oils really be applied to various types of transmissions?

　　类似于以上的问题事实上还有很多。说了这么多，变速箱油到底是干嘛的呢？我们知道，自动变速箱是个非常复杂的仪器，它的作用是把发动机的动力传递到车辆的行驶系统上。在传递动力的过程中，变速箱有个很重要的部件，叫“液力变矩器”（Torque Converter，下文简称“TC”）。

　　There are actually many similar issues as mentioned above. After all that has been said, what exactly is gearbox oil for? We know that an automatic transmission is a very complex instrument that transfers the power of the engine to the vehicle's driving system. In the process of transmitting power, the gearbox has an important component called the "Torque Converter" (TC).

　　变速箱油的其中一个作用就是传递动力。但是不仅是液力变矩器需要变速箱油传递动力哦，变速箱内的很多液压机械也需要变速箱油来推动，比如负责换挡的阀体。为了传递动力，变速箱油还有抗泡性，就是抵抗生成泡沫的能力。在传递动力的过程中，液体因为其不可被压缩而效率很高。但是空气如果混进液体中，通过液力变矩器的不停搅和，就会产生了泡沫，显著降低传递动力的效率。

　　One of the functions of gearbox oil is to transmit power. But not only does the hydraulic torque converter require gearbox oil to transmit power, but many hydraulic machinery inside the gearbox also require gearbox oil to drive, such as the valve body responsible for shifting gears. In order to transmit power, the transmission oil also has anti foaming property, which is the ability to resist the generation of foam. In the process of transmitting power, liquids are highly efficient because they cannot be compressed. However, if air is mixed into the liquid and continuously stirred by the hydraulic torque converter, foam will be produced, which will significantly reduce the efficiency of power transmission.

　　在液力变矩器后面，是变速箱丰富多彩复杂难懂的机械结构。这些机械结构也都是齿轮、摩擦片等组成，和其他机械一样，这些相互接触传递动力的机械结构也需要润滑和散热。这就是变速箱油的另一个作用：润滑和散热。

　　Behind the hydraulic torque converter is the diverse, complex, and difficult to understand mechanical structure of the gearbox. These mechanical structures are also composed of gears, friction plates, etc. Like other machines, these mechanical structures that come into contact with each other to transmit power also require lubrication and heat dissipation. This is another function of gearbox oil: lubrication and heat dissipation.

　　相比于发动机用的机油而言，变速箱油的性能要求更加复杂，因为机油并不承担传递动力的作用。因为变速箱技术的不断发展，为了满足其要求，变速箱油的性能要求也不断提升，相关制造标准也是越来越复杂。

　　Compared to engine oil, the performance requirements for transmission oil are more complex because oil does not play a role in transmitting power. Due to the continuous development of transmission technology, in order to meet its requirements, the performance requirements of transmission oil are also constantly improving, and the relevant manufacturing standards are becoming increasingly complex.

　　厂商越来越重视变速箱油，也是因为它是确保变速箱总成正常工作的根基要素。因为变速箱性能千差万别，不同型号变速箱的性能诉求也是千差万别。而变速箱油是变速箱执行换挡动作、散发热量和润滑齿轮的载体，自然要承担很多的考验。

　　Manufacturers are increasingly valuing gearbox oil because it is a fundamental element in ensuring the normal operation of the gearbox assembly. Because the performance of gearboxes varies greatly, the performance requirements of different models of gearboxes are also vastly different. And gearbox oil is the carrier for the gearbox to perform shifting actions, dissipate heat, and lubricate gears, naturally bearing many tests.

　　在一些别的案例中，用错了变速箱油，还会导致变速箱的烧毁。因为不仅仅是粘度经过仔细计算、匹配，散热也是经过精心设计的。如果变速箱油的承载热量的能力过强或过弱，都会导致散热机构效能降低，从而影响散热，导致变速箱烧毁。

　　In some other cases, using the wrong transmission oil can also cause the transmission to burn out. Because not only the viscosity is carefully calculated and matched, but also the heat dissipation is carefully designed. If the heat carrying capacity of the transmission oil is too strong or too weak, it will lead to a decrease in the efficiency of the heat dissipation mechanism, thereby affecting heat dissipation and causing the transmission to burn out.

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