What detergents should I use with my SPX3160P-SJG pressure washer? The recommended detergents to use with your pressure washer. Use only detergents specifically designed for pressure washers, such as: Sun Joe® HOUSE +DECK WASH Sun Joe® SNOW FOAM AUTO WASH Sun Joe® HEAVY DUTY CLEANER These detergents are designed to work effectively with pressure washers and will not damage your machine. Related articles Does my SPX3001 pressure washer have a downstream or upstream detergent injector? What detergents can I use with my SPX3160 pressure washer?