As we all know, automatic transmission is one of the important structures of automobile. The automatic transmission oil for automatic transmission is also "blood" like existence, essential.

大家都知道，自動變速箱油不僅僅是起到潤滑和冷卻作用，更重要的是有效的傳遞發動機和變速箱之間的扭矩，所有油質的好壞或瓶中型號選擇的正確與否都直接影響到汽車功率損耗和自動變速箱的正常工作與使用壽命，同時也會影響到行車的舒適性和駕駛樂趣。

As we all know, the automatic transmission oil not only plays the role of lubrication and cooling, but also effectively transmits the torque between the engine and the transmission. The quality of all the oil or the correct selection of the model in the bottle directly affects the power loss of the car and the normal work and service life of the automatic transmission, as well as the comfort and pleasure of driving.

因此，車主在平日里用車時，定期對自動變速箱保養檢查是必不可少的。有些變速箱廠家打著“終身免維護”的口號，但是，就真的可以終身免維護了嗎？其實不然，從嚴格角度來說，這是不科學的，自動變速箱在正常使用中自動變速箱油就算不變質等，也還需要揮發，器容量也會發生變化，到達不了其標準值。

Therefore, it is essential for car owners to maintain and check the automatic transmission regularly when they use the car on weekdays. Some gearbox manufacturers use the slogan of "maintenance free for life", but can they really maintain free for life? In fact, it is not. Strictly speaking, it is unscientific. Even if the automatic transmission oil is not deteriorated in normal use, it still needs to volatilize, and the capacity of the transmission will also change, which can not reach its standard value.

自動變速箱油會在哪幾種情況下發生變質現象呢？

Under which conditions will the automatic transmission oil deteriorate?

一、自動變速箱工作過程（液力傳動-變矩器，雙離合等），由于變扭器在傳遞發動機時有一部分是利用液力實現的，因此會形成大量的熱能；同時離合器和制動器在工作時產生摩擦力矩時也會產生大量的熱，因此導致自動變速箱油在一定時間內變質。

1、 During the working process of automatic transmission (hydraulic transmission torque converter, double clutch, etc.), a large amount of heat energy will be generated because the torque converter uses hydraulic power to transfer the engine; at the same time, when the clutch and brake generate friction torque, a large amount of heat will also be generated, resulting in the deterioration of automatic transmission oil in a certain period of time.

二、自動變速箱工作環境（溫度，環境信息），經常性工作較苛刻的環境下，由于自動變速箱的工作載荷較大，導致自動變速箱的工作溫度升高，長時間下來也會導致自動變速箱油提前變質。

2、 The working environment (temperature, environmental information) of the automatic transmission is often harsh. Due to the large working load of the automatic transmission, the working temperature of the automatic transmission will rise, and the automatic transmission oil will deteriorate in advance for a long time.

三、自動變速箱參數的變化（壓力，摩擦系數等），在某些工況下，由于自動變速箱的一些正常參數下降，導致壓力，摩擦系數的降低而影響變速箱的正常運轉。

3、 The change of automatic transmission parameters (pressure, friction coefficient, etc.) will affect the normal operation of the transmission due to the decrease of some normal parameters of the automatic transmission under some working conditions.

一般情況下，建議車主在4-6萬公里或兩年更換一次自動變速箱油。定期對自動變速箱做檢查養護，以免自動變速箱油提前變質，影響自動變速箱使用。

Under normal circumstances, it is recommended that car owners change the automatic transmission oil once every 40000-60000 km or every two years. Check and maintain the automatic transmission regularly, so as to avoid the deterioration of the automatic transmission oil in advance, which will affect the use of the automatic transmission.