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(dòng)變速箱油不僅僅是起到潤(rùn)滑和冷卻作用，更重要的是有效的傳遞發(fā)動(dòng)機(jī)和變速箱之間的扭矩，所有油質(zhì)的好壞或瓶中型號(hào)選擇的正確與否都直接影響到汽車功率損耗和自動(dòng)變速箱的正常工作與使用壽命，同時(shí)也會(huì)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(shí)，定期對(duì)自動(dòng)變速箱保養(yǎng)檢查是必不可少的。有些變速箱廠家打著“終身免維護(hù)”的口號(hào)，但是，就真的可以終身免維護(hù)了嗎？其實(shí)不然，從嚴(yán)格角度來說，這是不科學(xué)的，自動(dòng)變速箱在正常使用中自動(dòng)變速箱油就算不變質(zhì)等，也還需要揮發(fā)，器容量也會(huì)發(fā)生變化，到達(dá)不了其標(biāo)準(zhǔn)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(dòng)變速箱油會(huì)在哪幾種情況下發(fā)生變質(zhì)現(xiàn)象呢？

Under which conditions will the automatic transmission oil deteriorate?

一、自動(dòng)變速箱工作過程（液力傳動(dòng)-變矩器，雙離合等），由于變扭器在傳遞發(fā)動(dòng)機(jī)時(shí)有一部分是利用液力實(shí)現(xiàn)的，因此會(huì)形成大量的熱能；同時(shí)離合器和制動(dòng)器在工作時(shí)產(chǎn)生摩擦力矩時(shí)也會(huì)產(chǎn)生大量的熱，因此導(dǎo)致自動(dòng)變速箱油在一定時(shí)間內(nèi)變質(zhì)。

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(dòng)變速箱工作環(huán)境（溫度，環(huán)境信息），經(jīng)常性工作較苛刻的環(huán)境下，由于自動(dòng)變速箱的工作載荷較大，導(dǎo)致自動(dòng)變速箱的工作溫度升高，長(zhǎng)時(shí)間下來也會(huì)導(dǎo)致自動(dòng)變速箱油提前變質(zhì)。

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(dòng)變速箱參數(shù)的變化（壓力，摩擦系數(shù)等），在某些工況下，由于自動(dòng)變速箱的一些正常參數(shù)下降，導(dǎo)致壓力，摩擦系數(shù)的降低而影響變速箱的正常運(yùn)轉(zhuǎn)。

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(dòng)變速箱油。定期對(duì)自動(dòng)變速箱做檢查養(yǎng)護(hù)，以免自動(dòng)變速箱油提前變質(zhì)，影響自動(dòng)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.