![How often should I change the gearbox oil? The usual maintenance only involves changing engine oil and filter, but my friend says that the transmission fluid also needs to be changed on How often should I change the gearbox oil? The usual maintenance only involves changing engine oil and filter, but my friend says that the transmission fluid also needs to be changed on](https://images.wapcar.my/file1/6076df5b78b641d7b08cbb30b2e78498_1176.jpg)
How often should I change the gearbox oil? The usual maintenance only involves changing engine oil and filter, but my friend says that the transmission fluid also needs to be changed on
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