How often should transmission fluid be replaced?
Most manufacturers with a manual transmission switched to a ""fill-for-life"" system, which means that such cars don't require an oil change, except when it comes to clutch set replacement or intervention on the transmission assembly.
The automatic transmission fluid (ATF) change interval is recommended by the vehicle manufacturer and is usually at 60 to 120 thousand kilometers, with some exceptions. Level checking, replacement, as well as topping up, should be left to professional service technicians, as it often requires special conditions and tools.