How to flush a motorcycle engine after a water leakage in the oil problem ?

I just fixed my suzuki gsx-R 750 from a water leakage into to engine oil. Now I have to flush the engine. I’ve seen in supermarkets that they sell some kinda Engine Oil, that contains kerosene and other things ? Is it ok to use this, or just flush it with some cheap oil ??
I meant that they sell Engine (motor)Flush in supermarkets 😀 Is it ok to use this thing ?