Is It Normal for an Automatic Transmission Car's Gearbox to Overheat?

[DeEverett]

Mild overheating in an automatic transmission car's gearbox is normal. The heat comes from the conduction of engine and transmission temperature. The reason lies in the transmission not being effectively cooled. Below is a detailed introduction about car transmissions: Overview: The transmission is a device that changes the speed ratio and direction of motion, usually located between the clutch and the central drive. It can alter the torque, speed, and direction of motion transmitted from the driving shaft to the driven shaft according to different working conditions. Gear-driven transmissions generally consist of a casing and several gears. Classification: Automatic transmissions have become mainstream internationally, mainly including AT, AMT, CVT, and DCT types. Early AT transmission systems were mainly 4AT. AT achieves automatic gear shifting through an electronically controlled automatic operating system. CVT is a true continuously variable transmission with fewer parts and a smaller size. DCT has two clutches.