What type of detergent should I use in the WFW86HEBC1?

You must use only High Efficiency (HE) detergent, which will be marked 'HE' or 'High Efficiency' on the package. Using non-HE detergent creates excessive sudsing, results in longer cycle times, reduces rinsing performance, and may cause component failure or buildup of mold and mildew. Always follow the detergent manufacturer's instructions to determine the correct amount to use.