If you've bought a high-efficiency washer, you've likely cut your laundry water and energy use in half. But if you're not using a high-efficiency detergent, your machine's performance, and some of those savings, could be going down the drain.
High-efficiency laundry detergents are specifically formulated to work in high-efficiency machines, which operate differently than conventional washers. The latter use a tub full of water and an agitating action, requiring a detergent that produces a fair amount of suds.
By contrast, a high-efficiency machine uses a tumbling action, in which the clothes pass through a relatively small amount of water. Thus these washers need a detergent that, among other things, produces much fewer suds. Use a conventional detergent in these washers and excess suds can be produced, performance can go down and, over time, damage to the machine can occur.