Mustang Air Filter Replacement [PIC]
I usually replace my air filter every spring. This year I let it slide until just this past month, October. Needless to say, the air filter was a mess. I can't stress enough how important good airflow is into a car. Anything >= 6 cylinders needs good airflow. With a 4 cylinder car you just need to make sure to feed the hamster once in a while.