I am having still a hard time with it use of water.  It measures the clothes with a sensor and also puts enough water to not cover the top of the load. noticed in the manual it shows less water than clothes, but they seem to come clean.  Also if I understand correctly it says to use fabric softener when you use the deep water cycle.  I have already use fabric softener in the more shallow water, but I use an extra rinse.  Haven't notice any leftover fabric softener.  I just thought that was weird because you seem to have the thing with using less water otherwise, but why not use the extra rinse instead of "wasting water" with a deep cycle.  Doesn't make any sense