What maintenance task should be done every 30,000 miles?

The correct choice is to service the automatic transmission every 30,000 miles. This maintenance task is crucial because the transmission fluid can degrade over time, leading to potential issues in the transmission's performance. Regular servicing helps to ensure that the fluid remains clean and at the appropriate levels, which can extend the life of the transmission and improve vehicle performance. Additionally, this service may involve checking for leaks, replacing the filter, and flushing the system if necessary.

The other tasks mentioned, while important, typically occur at different intervals. For example, changing the oil is generally recommended every 5,000 to 7,500 miles, depending on the type of oil used and driving conditions. Rotating the tires is usually advised every 6,000 to 8,000 miles to promote even wear, while replacing the fuel filter can vary by vehicle but often occurs around 30,000 to 50,000 miles depending on the manufacturer’s recommendations.