I copy/pasted this form a good answer site. We have one and was told about the "low sudsing" formulas of HE products, etc. I use inexpensive brands, but have found, after about a year of having ours, that certain clothes retained a smelly quality (hubby's workout clothes and work uniforms especially) which carried over to towels and other things. A friend recommended good old fashioned BORAX. I adda bit of this to every load now, and regularly clean the dispenser drawer...and I mean CLEAN it! I remove the drawer and use scrub brushes and even hard bristle paint brushes to get in all the nooks and crannies of it (poor design I think with all the nooks an crannies). They get all black and goopy..NASTY really especially for a place where soap goes! But the way front loaders seal apparently locks in more smells and junk? I leave the door open between uses ( we have given up on replacing the inner light bulb, since I leave the door open alot).
Hope this helps answer your questions:
There is a good reason for using he detergent that is specially formulated for these newer front-load washers. HE laundry detergents are concentrated laundry detergents that are low-sudsing especially for use with low water high-efficiency washers.
If regular detergents were to be used in front-loading and high-efficiency washers, the presence of too many suds could 'confuse' washing cycles, cause delays and make proper rinsing of clothes difficult. Only he detergents should be used in he washers.
Similar to why dish detergent does not work well in a dishwasher which requires specially formulated non-sudsing dishwasher detergent, performance can be severely affected by the use of improper detergents in he detergent low water washing machines.
HE detergents can readily be found where regular laundry soap is sold - look for the 'HE' symbol the next time you shop. There is no difference in price (or shouldn't be) for this particular type of detergent, nor is there any reduction in loads per container. Buying in bulk can reap savings and ensure you have it on hand for all your washings.
Using proper HE detergent for your high-efficiency low water washer will enable your laundry appliance to perform as it should.