Best way to flush engine oil after water contamination

[Avinit4]

Hello people, following hole in Head causing water to go straight into engine, can anyone recommend best way to do engine flush please? Thanks

[Brianmoooore]

Cheap supermarket oil for a few miles, repeat, fill with correct oil.

[Avinit4]

Would running engine on idle for 5 mins be enough, or do I need to drive it. Also am I correct to think you don't think I should add any type of flushing agent as well?

[Avinit4]

Is it Any spec for cheap oil or should it be 10/30 or something else? Thanks btw

[Speedtouch]

Pretty much any multigrade will do. Best to change the filter when you put your good oil in.

[Avinit4]

Because engine very contaminated with sludge I'm going to use cheap oil and flushing agent.. And yes will also change filter with final oil