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Planetary Gear Set

The best guideline for when to change automatic transmission fluid (https://www.yourmechanic.com/services/transmission-fluid-service) comes from the manufacturer of the transmission itself. The owner’s manual for each vehicle provides the recommended mileage intervals for service. Typical recommendations generally range from 30,000 to 60,000...

Using transmission error codes (https://www.yourmechanic.com/article/the-most-common-error-codes-for-transmission-problems) is a necessary procedure for a transmission technician since automatic transmissions have been computer controlled for over 20 years. The transmissions currently in use are very different to diagnose and repair than transmissions from decades...

An automatic transmission does not use the same style clutch that a manual transmission uses. The automatic transmission (https://www.yourmechanic.com/article/how-an-automatic-transmission-works) uses a torque converter attached to the engine and transmission to serve as a connection between the two components. The torque...

There is often a debate among expert mechanics about what type of transmission system is the most efficient (https://www.yourmechanic.com/article/how-to-choose-between-manual-and-automatic-transmissions) and effective method of applying horsepower to the wheel. Some believe that automatic transmissions are best suited for consumers that commute...

Ignoring problems with cars is like ignoring problems with teeth. Waiting longer usually just results in more pain and expense. Seeing transmission fluid on the ground (https://www.yourmechanic.com/article/what-can-cause-a-car-to-leak-transmission-fluid) under your vehicle should get your attention right away. Transmission fluid is usually...