LF3000 is a workhorse filter, but definitely using legacy technology. LF9009 is the upgrade and adds a patented venturi nozzle into the mix. The upgrade from that part is the LF14009NN...it drops the stacked disc media and venturi nozzle, and uses a combination of StrataPore melt-blown media and nanofiber NanoNet media...all made in-house by Fleetguard.