Hello everybody. What are the differences between the GE filter-flo and the GE post filter-flo gearboxes? From what I understand, it sounds very similar to a whirlpool directdrive. I understand the pulleys will go clockwise for agitation and counterclockwise for spin. Do the GE post filter-flo washers use the same type of gear oil as they did in their filter-flos or a different type. I know that they're different. Pleas explain. Thanks.