Transmission fluid change intervals vary depending on the type of transmission, vehicle model, and driving conditions. Generally, automatic transmission fluid should be changed every 60,000 to 100,000 miles, while manual transmission fluid typically requires changing every 30,000 to 60,000 miles. However, if driving conditions are severe, such as heavy towing, frequent stop-and-go traffic, or driving in extreme climates, the fluid may need to be changed more frequently. Some newer vehicles have "filled-for-life" transmissions, but it is still advisable to check and possibly change the fluid to avoid transmission damage. Always refer to the vehicle manufacturer's recommendations for the most accurate schedule.
