Apart from lubricating your engine, transmission fluid also cleans, and reduce friction of the various internal parts.
It is essential therefore, you use the correct fluid for your specific vehicle.
It is also crucial that you change it as well when it is time to do so.
For example, a model year 2020 Mitsubishi L200 equipped with the 6 speed auto transmission uses Mitsubishi Motors genuine ATF-MA1 transmission fluid.
This is to be replaced at 100,000 km / 60,000 miles.
A Mitsubishi ASX equipped with a CVT (Continuously Variable Transmission) uses Mitsubishi Motors genuine J4 CVT fluid.
This is to be replaced at 40,000 km / 24,000 miles.
Stick to the maintenance schedule and your transmission will enjoy a long, and healthy life.