Flush or not?

[Drawweight]

I've got a 2020 Fiesta ST-Line.

I've noticed on several forums that an engine flush is not recommended on this engine.

Just looked at the last service done on my car and I notice that this was done.

Discounting whether a flush is required for any engine or not should I ask them not to do it next time specifically on that engine?

[PinkTornado]

Can't give a definitive answer but I have always seen people say NOT to flush an EcoBoost. Yet, last time at Ford, I was offered one as part of my service at a reduced cost! (I declined, and told the lass why)

[Tenacious]

On older engines, it's a great way for dislodging lumps and blocking oil ways.