Tip - How to Change the Transmission Fluid in a Mitsubishi | eHow

The transmission fluid in a Mitsubishi should be changed between 15,000 and 30,000 miles, depending on your driving conditions. Since a transmission is more likely to undergo a hefty amount of strain in highly polluted areas, it is possible that thickened sludge and harmful particles would enter your transmission closer to the 15,000 mile-mark....