Replacing Fuel Filter Really Works

So my van was making this tremendously loud whine from the fuel pump. It was so loud you could not use a cell phone at speed, which is nice. I replaced the fuel filter, a little $5 plastic box and the noise dropped to a low hum, still audible but a huge difference. I did the switch in a gravel parking area at the barn with a screw driver in about 10 minutes. I used a pair of vice grips to gently pinch the line coming out of the tank. Put a cloth down to catch the fuel coming out of the pump and old filter, probably about 3 ounces.