The DeWalt DPD3100 Gas Pressure Washer. The washer has DeWalt OHV GX engine which provides reliable commercial quality. Its heavy-duty commercial grade pump provides commercial quality and life. It has 3100 PSI Max 2.8 GPM Max which provides top cleaning effiency. Thermal protection and low oil shutoff prevents the engine and pump from neglect or abuse. 35 steel braided hose is extremely durable and covers most job sites without having to move your pressure washer. Engine power depends on the application, operating speed, operating conditions and other variables.