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What Are the Causes of Transmission Overheating?

2 Answers

VonCarlos

07/29/25 3:52am

Transmission overheating is caused by insufficient lubrication oil inside the transmission. Introduction to Transmission: A transmission is a device that changes the speed ratio and direction of motion. It is used in automobiles, tractors, ships, machine tools, and various machines to alter the torque, speed, and direction of motion transmitted from the driving shaft to the driven shaft under different working conditions. A gear-driven transmission generally consists of a housing and several gear pairs. Transmission Maintenance: Understand the replacement cycle of automatic transmission fluid: Most automatic transmissions require fluid replacement every two years or 40,000 to 60,000 kilometers, as specified in the vehicle's manual. It is recommended to replace the fluid 2,000 to 3,000 kilometers earlier than the specified interval. Correctly replace transmission fluid: As of 2010, the preferred method is dynamic fluid replacement, which uses specialized transmission fluid exchange equipment. During the operation of the transmission, the old fluid is thoroughly circulated and completely drained before adding new transmission fluid, achieving a replacement rate of over 90% and ensuring optimal results.

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EmilioFitz

08/12/25 7:39am

Regarding transmission overheating, I think the most common cause is poor driving habits. With decades of driving experience, I often see novice drivers speeding on highways or hauling heavy loads up steep slopes, forcing the transmission to work extra hard and generating friction heat. Additionally, if the transmission fluid is old and not replaced, its cooling efficiency drops drastically, leading to rapid temperature buildup over time. Frequent stop-and-go traffic in cities also disrupts fluid circulation, causing rapid heating. For prevention, remember not to overwork the transmission and change the fluid regularly—I typically check fluid levels every six months for added safety, avoiding sudden breakdowns on the road.

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