按用户手册的要求经常更换变速器油，油的颜色变深了（棕红色）或油变脏了，也要换油。

Change the fluid as often as it said in your owner's manual or when it becomes too dark (rather brown than red) or dirty.

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大多数生产厂商认为，换油应不受局限，并强调在每次更换发动机机油时应同时更换机油滤清器。

Most manufacturers specify that, with the more liberal oil-change recommendations, the oil filter should be changed every time the engine oil is changed.

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驱动装置的减速器每年换油。

Change oil of the redactor in the drive device annually.

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