What type of detergent should I use in the WFW96HEAU0?

You must use only High Efficiency (HE) detergents marked 'HE' or 'High Efficiency' on the package. Using non-HE detergent will create excessive sudsing, result in longer cycle times, reduced rinsing performance, and can cause component failure and buildup of mold or mildew. HE detergents are low-sudsing and quick-dispersing to produce the right amount of suds for best performance.