Karcher 2500 PSI Pressure Washer "honda sh" Questions

Honda GC 160 engine Need to know what grade of oil to complete oil change. honda recomendes 10-30 sj/sh......19.52 oz

Need to know what oil to use for oil change in the kracher by honda engine oil....10-30...sh/sj.......19.52 oz do not over fill oil in pump is a special oil through karcher....3.52 oz of pump oil