How often should automatic transmission fluid typically be replaced?

The correct answer indicates that automatic transmission fluid should typically be replaced every 30,000 to 60,000 miles. Regular maintenance of transmission fluid is crucial because it plays an essential role in lubricating the moving parts within the transmission, ensuring smooth operation and preventing overheating. Over time, transmission fluid can become contaminated with debris, metal shavings, and other impurities, which can lead to a reduction in its effectiveness.

Changing the fluid within this mileage range helps to maintain proper transmission function and prolongs the life of the transmission. Additionally, some manufacturers recommend more frequent changes under specific driving conditions, such as heavy towing or stop-and-go driving.

In contrast, the other choices either suggest intervals that are too short or too lengthy for effective maintenance, or recommend replacement only in the event of leaks, which can cause significant damage before a problem is detected. Hence, adhering to the recommended interval of 30,000 to 60,000 miles ensures optimal performance of the automatic transmission.