What type of detergent should I use in the Whirlpool Cabrio?

You must use only High Efficiency (HE) detergents, marked 'HE' or 'High Efficiency' on the package. Low-water washing creates excessive sudsing with regular non-HE detergent, which will likely result in longer cycle times, reduced rinsing performance, component failures, and noticeable mold or mildew. Always follow the manufacturer's instructions to determine the correct amount to use. (Page 3)