How Many Kilometers Should Automatic Transmission Fluid Be Changed?

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Automatic transmission fluid is generally recommended to be changed every two years or approximately 40,000 kilometers. An automatic transmission is a gear-shifting device that can automatically shift gears based on the vehicle's speed and engine RPM, as opposed to a manual transmission. Replacement intervals for other transmission types: Manual transmission fluid is typically recommended to be changed every three years or approximately 100,000 kilometers; continuously variable transmission (CVT) fluid is generally suggested for replacement every two years or around 60,000 kilometers. Functions of changing transmission fluid: Reduces friction and wear, controls clutch friction and synchronizer performance; bears loads (low-speed high torque, vibration loads), dissipates heat, reduces vibration and noise, removes contaminants from gear meshing areas (cleaning function); prevents corrosion, pitting, and surface metal tearing, isolates metal surfaces to prevent direct metal-to-metal contact.