Product review (3 stars): ... filter but I felt my old filter did a better job of cleansing the water
This was supposed to be the new and improved Whirlpool filter but I felt my old filter did a better job of cleansing the water.  It didn't come with instructions telling me how much water to flush through it so I did 3 gallons like my old filter.  Maybe that wasn't enough flushing???
Rick