I spoke to well experienced mechanic. Piston 1 and 3 can be an issue if the wrong oil is used. Also as a precaution for us all we need to use a stronger coolant like water wetter and motul inulgel. If the engine is cool these piston rings wont give in and also after a hard drive, cruise for a bit then park the car off.
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Our car have a run on pump & cooling fan for after you switch off the engine if its too hot but letting the turbo spool down is always a good practice.
As for using oil additives i don't think they make up for using a good quality recommended grade of engine oil.
Dell.