Should I Change Transmission Fluid After 100k Miles?
Whether you should change transmission fluid after 100,000 miles depends heavily on your vehicle’s maintenance history, manufacturer recommendations, and current transmission behavior. For vehicles with regular fluid changes and a recommended service interval, the service is usually sensible preventive maintenance. If the fluid is burnt, the transmission is shifting poorly, or the fluid has never been changed, the service may carry significant risk and should be evaluated by a qualified transmission specialist.